2022 safety officer-a certificate free examination questions and safety officer-a certificate mock examination

Source of question bank ： Safety production simulation test, a little public official account.

Pass the safety production simulation exam at one point ： Security Officer -A Certificate free test questions according to the new security officer -A Certificate examination outline requirements , Pass the safety production simulation test at one point and the safety officer will -A Compile the test questions of the certificate simulation examination , Form a set of safety officers -A Test questions of Zhengquan real simulation test , Students can pass the safety officer -A Authentic simulation of certificate simulation examination , The safety officer -A Certificate self-test .

1、【 Multiple choice 】 The steel wire rope must be scrapped and renewed under any of the following conditions ？（  ACD  ）

A、 Wire breakage of steel wire rope is serious

B、 When the steel wire is seriously worn or rusted , The diameter of the steel wire is reduced to... Of its diameter 10% when

C、 Local focus of broken wire

D、 The steel wire rope loses its normal state , In case of severe deformation

2、【 Multiple choice 】 Take comprehensive measures , Effectively prevent the occurrence of heatstroke accidents , from ( ) And other aspects to do a good job in heatstroke prevention and cooling .（  ABC  ）

A、 technology

B、 care

C、 organization

D、 Leader

3、【 Multiple choice 】 Location requirements of wall connecting facilities ( ).（  ACD  ）

A、 The distance from the main node shall not be greater than 300mm

B、 The distance from the main node shall not be greater than 600mm

C、 It should be set close to the main node

D、 It shall be set from the first longitudinal horizontal bar at the bottom of the scaffold

4、【 Multiple choice 】 The employee has one of the following circumstances , It shall not be recognized as work-related injury or deemed as work-related injury ：( ).（  ABCD  ）

A、 Casualties due to crime or violation of public security administration

B、 Drunkenness leads to casualties

C、 Self mutilation

D、 commit suicide

5、【 Multiple choice 】 Material elevator in ( ) Wait for bad weather , Must stop running .（  ABD  ）

A、 The heavy rain

B、 The fog

C、 snow

D、 The wind speed 13m/s Strong winds and above

6、【 Multiple choice 】 The basic characteristics of welding or cutting are ( ).（  ACDE  ）

A、 The high temperature

B、 Easy to burn

C、 Flammable

D、 Explosive

E、 High pressure

7、【 Multiple choice 】 Welding and cutting site 10 Within meters and under high-altitude operation , Do not stack ( ) And so on 、 Explosives .（  ABCD  ）

A、 oils

B、 Wood

C、 Oxygen bottle

D、 Acetylene generator

8、【 Multiple choice 】 The structure and installation of beam or truss support shall comply with the following provisions ：( ).（  ABCD  ）

A、 When telescopic truss is used , The lap length shall not be less than 500mm, Specifications of connecting pins of upper and lower chords 、 The quantity shall be in accordance with the design , And not less than 2 individual U The U-shaped clamp or steel pin shall be fastened ,2 individual U The distance between U-shaped clamps or pins shall not be less than 400mm

B、 The spacing setting of installed beam or truss supports shall be consistent with the formwork design drawing

C、 The building structure supporting beam or truss support shall have sufficient strength , otherwise , Additional column support shall be provided

D、 If multiple trusses are arranged in groups , A horizontal brace must be added at the corner of the lower chord

E、 The building structure supporting beam or truss support must be supported by columns

9、【 Multiple choice 】 The organization design of temporary power consumption on the construction site shall include the following contents: ( ).（  ABC  ）

A、 Draw temporary power engineering drawings

B、 Design lightning protection device

C、 Determine protective measures

D、 Formulate emergency plan for safe power consumption

10、【 Multiple choice 】 The neutral point of the special power supply for temporary power engineering on the construction site is directly grounded 220/380V Three phase four wire low voltage power system , What rules must be met .( )（  AC  ）

A、 Three level power distribution system is adopted

B、 use TN-C-S System

C、 use TN-S System

D、 Adopt three-level power distribution and three-level protection system

11、【 Multiple choice 】 Construction safety management includes construction site ( ) Management of .（  ACD  ）

A、 All of you

B、 All elements

C、 comprehensive

D、 Whole process

12、【 Multiple choice 】 The production safety law stipulates that the main persons in charge of production and business operation units are ( ) One of the acts of , Order to make corrections within a time limit , Causing production safety accidents , The main person in charge of the production and business operation unit shall be dismissed ; Criminal , Criminal responsibility shall be investigated in accordance with the relevant provisions of the criminal law .（  ACD  ）

A、 Not established 、 Improve the safety production responsibility system of the unit

B、 No regular maintenance of safety equipment 、 Maintenance and regular inspection

C、 Failure to organize the formulation of safety production rules and regulations and operation procedures of the unit

D、 Failing to organize the formulation and implementation of the safety production education and training plan of the unit

E、 Use the process endangering production safety that should be eliminated 、 The equipment

13、【 Multiple choice 】 Of tower crane ( ) And other safety protection devices shall not be adjusted and removed at will , It is forbidden to replace the operating mechanism with a limit device .（  ABCD  ）

A、 Torque limiter

B、 Weight limiter

C、 Luffing limiter

D、 Travel stop

14、【 Multiple choice 】 What are the main safety devices of tower crane ？（  ACD  ）

A、 Lifting moment limiter

B、 Speed governor

C、 load lifting limiter

D、 Lifting height limiter

15、【 Multiple choice 】 Repair welding of hook is prohibited , Which of the following situations should be predicted ？（  ABCD  ）

A、 use 20 Observe with a magnifying glass that there are cracks and cracks on the surface

B、 The wear of the section at the hanging rope exceeds the original height 10%

C、 The wear of the spindle exceeds... Of its diameter 5%

D、 The opening is larger than the original size 15%

16、【 Multiple choice 】 About the safety protection of portal operation , The following statements are correct ( )（  ABD  ）

A、 Openings in slabs and walls , A firm cover plate must be provided 、 Protective railings 、 Safety net or other fall protection facilities .

B、 The elevator wellhead must be equipped with protective railings or fixed gates ; The elevator shaft shall be separated by two floors at most 10m Set up a safety net .

C、 Steel pipe pile 、 Upper opening of bored pile and other pile holes , Cup shape 、 Upper opening of strip foundation , Unfilled pits , And manholes 、 skylight 、 Floor, door, etc , It is not necessary to set a stable cover according to the opening protection .

D、 All kinds of holes and pits near the passageway of the construction site , In addition to setting protective facilities and safety signs , A red light should also be set at night .

17、【 Multiple choice 】 The following belongs to the safety device of construction elevator ( )（  ABD  ）

A、 Fall protector

B、 Upper and lower limit switches

C、 Docking device

D、 Overload protection device

18、【 Multiple choice 】 Which of the following are the safety protection tools on the construction site ？（  ACD  ）

A、 Insulating shoes

B、 Templates

C、 A safety helmet

D、 Safety belt

19、【 Multiple choice 】 Which of the following belong to 《 Safety production evaluation standard for construction enterprises 》 Safety production management system of construction enterprises ？（  ABCE  ）

A、 Safety inspection system

B、 Safety production fund guarantee system

C、 Safety education and training system

D、 Safety demonstration system

E、 Reporting and handling system of production safety accidents

20、【 Multiple choice 】 The following safety technical requirements for steel column hoisting of high-rise steel structure , It's true that ( ).（  ABDE  ）

A、 Before the installation , The climbing ladder and operation hanging basket or platform shall be temporarily fixed on the steel column

B、 When lifting , The root of the column shall not be dragged on the ground

C、 Hoisting shall be vertical , The lifting point shall be set in the middle of the column

D、 It is forbidden to collide with the installed components during hoisting

E、 When in place, the hook can be disengaged only after the temporary fixing is reliable

21、【 Multiple choice 】 The following safety technical requirements for steel column hoisting of high-rise steel structure , It's true that ( ).（  ABD  ）

A、 Before the installation , The climbing ladder and operation hanging basket or platform shall be temporarily fixed on the steel column

B、 When lifting , The root of the column shall not be dragged on the ground

C、 Hoisting shall be vertical , The lifting point shall be set in the middle of the column

D、 It is forbidden to collide with the installed components during hoisting

22、【 Multiple choice 】 The following safety technical requirements for hoisting of reinforced concrete structures , It's true that ( ).（  ABD  ）

A、 Before component lifting , Its strength must meet the design requirements

B、 floor 、 After the roof panel is hoisted , There are gaps and holes between or on each other , Cover plate and enclosure shall be provided

C、 For multi span single storey plant, the main span should be hoisted first , Rear crane auxiliary span ; Lift the low span first , Rear crane high span

D、 The middle of the workshop should be hoisted first , Hang back on both sides , Then hang the corner , And must be carried out symmetrically

23、【 Multiple choice 】 The following safety management requirements for hoisting personnel , It's true that ( ).（  ABD  ）

A、 The crane driver shall operate with certificate

B、 A full-time messenger shall be set

C、 The reinforcement can be bound and hoisted by professional reinforcement workers

D、 Before operation, safety technical disclosure shall be made to the hoisting personnel according to the regulations

24、【 Multiple choice 】 The following statement about section steel cantilever scaffold is correct :( ).（  ABC  ）

A、 The section steel cantilever beam should adopt the section steel with biaxial symmetrical section .

B、 The model of cantilever steel beam and anchor shall be determined according to the design , The section height of steel beam shall not be less than 160mm.

C、 The tail end of the cantilever beam shall be fixed on the reinforced concrete beam slab structure at two or more places .

D、 Of anchored section steel cantilever beam U The diameter of T-shaped reinforcement pull ring or anchor bolt shall not be less than 18mm.

25、【 Single topic selection 】 When the scaffold is removed to the height of the last long vertical pole at the lower part , Should be erected at the appropriate position first ( ) After reinforcement , Then remove ( )（  A  ）

A、 Temporary throwing support ; Wall pieces

B、 Wall pieces ; Temporary throwing support

C、 A broomstick ; Wall pieces

D、 Wall pieces ; A broomstick

26、【 Single topic selection 】 When the height of the hinge point at the root of the jib of the tower crane exceeds ( ) Anemometer shall be equipped when .（  C  ）

A、30m

B、40m

C、50m

D、60m

27、【 Single topic selection 】 When the anchor bolt above the excavation surface of the foundation pit 、 Soil nails 、 When the support does not meet the design requirements ,( ) Overbreak down .（  D  ）

A、 Not suitable

B、 prohibit

C、 Sure

D、 strictly prohibit

28、【 Single topic selection 】 When the lifting capacity exceeds the maximum lifting capacity 110% when , The lifting limiter should act , Stop the tower crane to ( ) Direction running .（  A  ）

A、 rising

B、 falling

C、 about

D、 Up and down

29、【 Single topic selection 】 In the working pit , Personnel shall be provided with qualified and firmly fixed equipment up and down ( ).（  C  ）

A、 Safety belt

B、 Safety net

C、 Safety ladder

D、 Safety rope

30、【 Single topic selection 】 When crawler crane is working , The slope shall not be greater than ( ), Keep a safe distance from the ditch foundation pit .（  C  ）

A、5°

B、4°

C、3°

D、2°

31、【 Single topic selection 】 Multiple excavators excavate mechanically on the same action surface , The distance between excavators shall be greater than ( ).（  B  ）

A、5m

B、10m

C、15m

D、20m

32、【 Single topic selection 】 Vertical openings landing on the wall, etc 、 The height of window sill is lower than ( )mm The vertical opening and the opening of the frame structure when there is no masonry wall after pouring concrete , Protective railings shall be set according to the requirements of edge protection .（  C  ）

A、300

B、500

C、800

D、1000

33、【 Single topic selection 】 The safety protection device of tower crane shall not be adjusted and removed at will , Do not use ( ) Replace the control mechanism .（  C  ）

A、 Torque limiter

B、 Luffing limiter

C、 Limit device

D、 Travel stop

34、【 Single topic selection 】 The horizontal distance between any part of the tower crane and the transmission line shall not be less than ( ).（  C  ）

A、4m

B、3m

C、2m

D、1m

35、【 Single topic selection 】 Foundation pit （ Slot ） The surrounding drainage ditch and water collecting well shall be set at ( ).（  A  ）

A、 Outside the scope of the foundation

B、 Other than stacking soil

C、 Outside the fence

D、 Within the scope of foundation

36、【 Single topic selection 】 Demolition method of foundation pit support structure 、 The removal sequence shall comply with ( ) requirement .（  A  ）

A、 Special construction scheme

B、 working procedure

C、 Construction site environment

D、 Construction progress

37、【 Single topic selection 】 Operators of vertical transportation machinery 、 Installation and disassembly workers 、 Blasting operators 、 Crane signalman 、 Special operators such as climbing and erection operators , It must be approved in accordance with the relevant provisions of the state ( ) train , After obtaining the qualification certificate for special operation , Before starting work .（  A  ）

A、 Special safe operation

B、 Tertiary education

C、 Safety education

D、 Safety skills

38、【 Single topic selection 】 During lifting operation ,( ) Cable stayed 、 Inclined lifting and lifting of heavy objects buried underground or condensed on the ground .（  A  ）

A、 prohibit

B、 allow

C、 Sure

D、 must

39、【 Single topic selection 】 Install at the construction site 、 Dismantle construction hoisting machinery and integral lifting scaffold 、 Formwork and other jack up erection facilities , Must be ( ) To undertake .（  D  ）

A、 The general contractor

B、 Subcontractors

C、 construction control unit

D、 Units with corresponding qualifications

40、【 Single topic selection 】 Slings and riggings ( ) It should be checked once , And make records .（  C  ）

A、1 Months

B、3 Months

C、6 Months

D、 A year

41、【 Single topic selection 】 During winter construction , The welding site shall be cleaned in advance , There must be no ( ).（  C  ）

A、 frost

B、 Impurity

C、 Ice and snow

D、 wood

42、【 Single topic selection 】 About the installation and disassembly of construction hoisting machinery , The following statement is wrong :( ).（  C  ）

A、 install 、 Dismantle construction hoisting machinery and integral lifting scaffold 、 Formwork and other jack up erection facilities , A disassembly and assembly plan shall be prepared 、 Formulate safety construction measures

B、 install 、 Dismantle construction hoisting machinery and integral lifting scaffold 、 Formwork and other jack up erection facilities , It should be supervised on site by professional technicians

C、 Construction hoisting machinery and integral lifting scaffold 、 After the formwork and other jack up erection facilities are installed , The general contractor shall conduct self inspection , Issue self inspection certificate , And provide safe use instructions to the construction unit , Go through the acceptance procedures and sign

D、 Operators of vertical transportation machinery 、 Installation and disassembly workers 、 Blasting operators 、 Crane signalman 、 Special operators such as climbing and erection operators , Special safety operation training must be conducted in accordance with relevant national regulations , After obtaining the qualification certificate for special operation , Before starting work

43、【 Single topic selection 】 according to 《 Safe production method 》 Regulations , The main person in charge and safety management personnel of the production and business operation unit must have the ability corresponding to the production and business operation activities of the unit ( ) And management skills .（  C  ）

A、 Production and operation

B、 Safety technology

C、 Safety production knowledge

D、 Practice qualification

44、【 Single topic selection 】 Use gas welding 、 During gas cutting hot work , The distance between oxygen cylinder and acetylene cylinder and hot work site shall not be less than ( )m, And shall not be exposed to the hot sun .（  A  ）

A、10

B、15

C、20

D、30

45、【 Single topic selection 】 Which of the following is a person's unsafe behavior ( ).（  A  ）

A、 Operate by hand instead of tools

B、 Climb and sit in a safe position

C、 Walking safety passage

D、 Don't risk entering dangerous places

46、【 Single topic selection 】 Nut of AC welding machine terminal 、 Copper washer 、 The busbar shall be fastened , Nut ( ) Defects 、 ablation 、 Loose .（  A  ）

A、 Undue

B、 There can be

C、 But there are

D、 Allow

47、【 Single topic selection 】 Temporary fire-fighting facilities shall be set up simultaneously with the construction of projects under construction . In housing construction engineering , The gap between the setting of temporary fire-fighting facilities and the construction progress of the main structure of the project under construction shall not exceed ( ) layer .（  B  ）

A、1

B、3

C、5

D、10

48、【 Single topic selection 】 Full time safety production management personnel find hidden dangers of safety accidents , It should be reported to the government in a timely manner ( ) The report .（  D  ）

A、 Project technicians

B、 Project leader

C、 Safety production management organization

D、 Project leader and safety production management organization

49、【 Single topic selection 】 Do not use an excavator bucket ( ).（  A  ）

A、 Lifting materials

B、 Booster Machinery

C、 Traction machinery

D、 Transportation

50、【 Single topic selection 】 The following description of the meaning of safety signs , What's not right is ( ).（  D  ）

A、 Prohibition sign , It means forbidding or stopping people from doing something

B、 Warning Sign , It means to warn people to be careful 、 look out 、 Be careful

C、 Command flag , It means that... Must be observed

D、 Prompt sign , The meaning is to remind people not to do

51、【 Single topic selection 】《 Regulations on the administration of safe production of construction projects 》 Regulations , The project leader of the construction unit shall organize and formulate safety construction measures according to the characteristics of the project , Eliminate potential safety accidents ,( ) Report production safety accidents .（  A  ）

A、 In time 、 truthfully

B、 After investigation

C、 on time 、 real

D、 In time 、 comprehensive

52、【 Single topic selection 】《 Regulations on the administration of safe production of construction projects 》 Regulations , The construction unit shall establish a work safety management organization , Equipped with ( ) personnel .（  A  ）

A、 Full time safety production management

B、 Part time safety production management

C、 Safety production supervision

D、 Full time and part-time safety production inspection

53、【 Single topic selection 】《 Regulations on the administration of safe production of construction projects 》 Regulations , The construction unit has a production safety accident , It shall be in accordance with the provisions of the state on the reporting, investigation and handling of casualty accidents , In time 、 Tell the truth to ( ) Or other relevant departments report .（  D  ）

A、 The Department responsible for the supervision and management of work safety

B、 Construction administrative department

C、 The labor department

D、 The Department responsible for the supervision and administration of work safety 、 Construction administrative department

54、【 Single topic selection 】《 Circular of the State Council on Further Strengthening the work of production safety in enterprises 》（ Guo fa （2010）23 Number ） It is stipulated that major production safety responsibility accidents occur in enterprises , Investigate the responsibility of the main person in charge of the accident enterprise ; Breaking the law , Investigate the main person in charge of the accident enterprise or ( ) And the legal responsibility of the person in charge of the superior enterprise .（  B  ）

A、 Enterprise contractor

B、 The actual controller of the enterprise

C、 Business partners

D、 Enterprise shareholder

55、【 Single topic selection 】“ Three don't hurt ” It doesn't include ( ).（  D  ）

A、 Don't hurt yourself

B、 Don't hurt others

C、 Don't be hurt by others

D、 No harm to objects

56、【 Single topic selection 】 The length of the power line at the primary side of the electric welding machine shall not be greater than ( ).（  B  ）

A、3m

B、5m

C、10m

D、15m

57、【 Single topic selection 】 Of the production and business operation unit ( ) Organize employees to participate in the democratic management and supervision of the work safety of the unit according to law .（  A  ）

A、 Labour Union

B、 Board of directors

C、 The security department

D、 Superior department

58、【 Single topic selection 】 Production and business operation entities shall provide employees with qualified services ( ) Labor protection articles .（  B  ）

A、 Industry standard or enterprise standard

B、 National standards or industrial standards

C、 National standards or enterprise standards

D、 Enterprise standards or local standards

59、【 Single topic selection 】 The production and business operation unit makes business decisions involving production safety , We should listen to ( ) And opinions of safety production management personnel .（  A  ）

A、 Safety production management organization

B、 Project management organization

C、 Quality and technical management organization

D、 Engineering management organization

60、【 Single topic selection 】 The labor contract concluded between the production and business operation unit and the employees , The relevant provisions on ensuring the labor safety and safety of employees shall be specified ( ) The matter of .（  B  ）

A、 Accident emergency measures

B、 Prevention of occupational hazards

C、 Safety technical measures

D、 Declaration of occupational hazards

61、【 Single topic selection 】 Environmental protection insists on giving priority to protection 、 Prevention first 、 Comprehensive management 、( )、 The principle of liability for damage .（  C  ）

A、 Government oriented

B、 Enterprise oriented

C、 Public participation

D、 Department cooperation

62、【 Single topic selection 】 Foundation pouring of material elevator C20 concrete , The thickness shall not be less than ( )（  D  ）

A、150mm

B、200mm

C、250mm

D、300mm

63、【 Single topic selection 】 The wear amount of pulley rope groove wall thickness reaches... Of the original wall thickness ( ) Should be scrapped .（  D  ）

A、50%

B、40%

C、30%

D、20%

64、【 Single topic selection 】 Upper and lower fixing of pulley block 、 There should be a gap between the moving pulleys ( )m The minimum distance .（  C  ）

A、0.5m

B、1m

C、1.5m

D、2m

65、【 Single topic selection 】 The clear width and clearance height of the fire lane shall not be less than ( )m.（  D  ）

A、1

B、2

C、3

D、4

66、【 Single topic selection 】 Networks of security organizations such as France ,( ) China's management system , In terms of safety work , There is no obvious administrative subordinate relationship between the Ministry and the district and province .（  B  ）

A、 Be similar to

B、 differ

C、 Same as

D、 be better than

67、【 Single topic selection 】 According to the regulation , The wear or corrosion amount of steel wire on the surface of steel wire rope is up to ( ) when , Should be scrapped .（  D  ）

A、0.07

B、0.1

C、0.2

D、0.4

68、【 Single topic selection 】 According to the relevant provisions of the Ministry of construction , Project leader of construction enterprise , Means by ( ) to grant authorization , The person in charge of construction project management .（  D  ）

A、 General manager of the enterprise

B、 Corporate board of directors

C、 Enterprise labor and personnel department

D、 Legal representative of the enterprise

69、【 Single topic selection 】 according to 《 Management rules for safety technical assessment of special operation personnel 》（GB5306-85） The provisions of the , Special operation personnel with operation certificate , Must be reviewed regularly , Review every ( ) once .（  B  ）

A、1 year

B、2 year

C、4 year

D、6 year

70、【 Single topic selection 】 according to 《 Regulations on the administration of safe production of construction projects 》, Full time safety production management personnel are responsible for on-site supervision and inspection of safety production . Discover potential safety accidents , Report to the project leader and work safety management organization in time ; Command against violations 、 Illegal operation , Should ( ).（  C  ）

A、 Report immediately

B、 Fined

C、 Stop immediately

D、 Give sanctions

71、【 Single topic selection 】 according to 《 Measures for the establishment of safety production management organization and the allocation of full-time safety production management personnel in construction enterprises 》 Regulations , Of construction projects ( ) The safety production situation of the project shall be reported to the safety production management organization of the enterprise on a regular basis .（  A  ）

A、 Full time safety production management personnel

B、 Construction personnel

C、 Technician

D、 Project leader

72、【 Single topic selection 】 according to 《 Regulations on the qualification management of construction enterprises 》（ Order of the Ministry of Construction No 87 Number ） and 《 Qualification grade standard for construction enterprises 》 The provisions of the , Engaged in the installation of construction hoisting machinery 、 Demolition construction unit , You should have ( ).（  B  ）

A、 License for installation, transformation and maintenance of special equipment

B、 Professional contracting qualification for hoisting equipment installation engineering

C、 Tower crane disassembly license

D、 Hoisting machinery installation license

73、【 Single topic selection 】 Fixing of railing post and its connection with cross bar , Its overall structure shall make the protective railing anywhere on the upper pole , Can withstand ( ) The direction of the 1000N external force .（  D  ）

A、 vertical

B、 level

C、 Slant down 45% Direction

D、 whatever

74、【 Single topic selection 】 The construction unit shall, according to the characteristics of the construction project 、 Range , On the construction site ( ) monitor , Formulate the emergency rescue plan for production safety accidents on the construction site .（  D  ）

A、 Potential accident

B、 Hazard sources

C、 Dangerous parts

D、 Parts prone to major accidents 、 link

75、【 Single topic selection 】 When the construction unit prepares the construction organization design , Corresponding measures shall be formulated according to the characteristics of construction projects ( ).（  B  ）

A、 Safety protection facilities

B、 Safety technical measures

C、 Safety technology system

D、 Quality and technical system

76、【 Single topic selection 】 Construction elevator ( ) Connect to the foundation .（  C  ）

A、 Hanging cage

B、 Bottom cage

C、 chassis

D、 Guide rail frame

77、【 Single topic selection 】 Construction elevator is a kind of working cage （ Hanging cage ） Along the ( ) Make a vertical （ Or tilt ） A machine used to transport people and materials .（  B  ）

A、 Standard section

B、 Guide rail frame

C、 A catheter

D、 passageway

78、【 Single topic selection 】 The operation button of construction elevator is in ,( ) Non automatic reset type must be adopted （  D  ）

A、 Up button

B、 Lower button

C、 Stop button

D、 Emergency stop button

79、【 Single topic selection 】 The construction elevator shall be equipped with overload protection device , Overload protection device when the load reaches the rated load capacity 110% It should be possible to ( )（  D  ）

A、 Automatically cut off the power supply of the special switch box

B、 Start the automatic alarm device

C、 Normal start is allowed

D、 Stop the cage start

80、【 Single topic selection 】 According to the relevant provisions of the Ministry of construction , The depth of excavation exceeds ( ) The foundation pit 、 A special construction scheme shall be prepared for the earthwork excavation of the trench .（  C  ）

A、3m（ contain 3m）

B、5m

C、5m（ contain 5m）

D、8m

81、【 Single topic selection 】 according to 《 Rules for investigation and analysis of casualty accidents of enterprise employees 》（GB6442－86） The provisions of the , The direct cause of the accident refers to machinery 、 Unsafe state of substance or environment and ( ).（  B  ）

A、 No safe operation procedures or incomplete

B、 Human unsafe behavior

C、 Unreasonable Labor Organization

D、 Lack of inspection or wrong guidance for on-site work

82、【 Judgment questions 】 During electric welding operation , The switch must be turned off when welding is completed or off duty , Leave enough time to observe , After confirming that the welding slag has cooled , Before leaving .（  √  ）

83、【 Judgment questions 】 The production and business operation unit does not have any emergency evacuation facilities in the staff dormitory 、 The sign is obvious 、 Keep the exit clear , Order to make corrections within a time limit , The person in charge and other persons directly responsible shall be punished , Criminal , Criminal responsibility shall be investigated in accordance with the relevant provisions of the criminal law .（  √  ）

84、【 Judgment questions 】 The front shovel excavator is mainly used to excavate the working face above the parking face .（  √  ）

85、【 Judgment questions 】 according to 《 Law of the people's Republic of China on the prevention and control of air pollution 》 The provisions of the , Construction land temporarily unavailable , The construction unit shall cover the exposed ground ; More than three months , Greening should be carried out 、 Pave or cover .（  √  ）

86、【 Judgment questions 】 Welding and painting on the construction site cannot be carried out in the same area at the same time .（  √  ）

87、【 Judgment questions 】 The order of formwork removal shall be in accordance with the provisions of the plate design , If there is no design provision , The principle of supporting first and then dismantling shall be followed , Remove the rear support first , First remove the non load bearing formwork , Then remove the formwork of the bearing part , From top to bottom , Remove the lateral support first , Remove the vertical support .（  √  ）

88、【 Judgment questions 】 When the steel wire rope has cage distortion, it shall be scrapped immediately .（  √  ）

89、【 Judgment questions 】 When tools and sporadic objects are inconvenient to transport , It can be stacked or hung on the suspended components （  ×  ）

90、【 Judgment questions 】 Construction hoisting machinery needs to be jacked up in the process of use , After the user entrusts the original installation unit or the installation unit with corresponding qualification to implement the special construction scheme , It can be put into use .（  √  ）

91、【 Judgment questions 】 On construction hoisting machinery , On the basis of safe use , Standard sections and attachment devices not manufactured by the original manufacturer can be installed .（  √  ）

92、【 Judgment questions 】 The indoor power distribution shall adopt porcelain bottle according to the wiring type 、 Porcelain （ plastic ） clip 、 Embedded insulation slot 、 Laying through pipes or steel cables .（  √  ）

93、【 Judgment questions 】 The body of the tower crane has been grounded , The exposed conductive part of its electrical equipment can no longer be connected with PE Wire connection .（  √  ）

94、【 Judgment questions 】 In the course of production , An accident is only a death 、 damage , However, it does not include accidents of property loss or other losses .（  ×  ）

95、【 Judgment questions 】 During construction and production , Cause death 、 damage 、 Occupational Diseases 、 Accidents of property loss or other losses , It is called production safety accident .（  √  ）

96、【 Judgment questions 】 In the industrial injury insurance mechanism, the task of the government is to prevent accidents and pay the insurance premium after accidents .（  √  ）

97、【 Judgment questions 】 Acetylene cylinders shall not be put down for use , It is mainly to prevent acetone adsorbing acetylene from overflowing .（  √  ）

98、【 Judgment questions 】 Power Distribution Box 、 The power incoming end of the switch box can be movably connected with plugs and sockets .（  ×  ）

99、【 Judgment questions 】 The power distribution cabinet shall be equipped with power isolation switch and short circuit 、 overload 、 Leakage protection appliances . There shall be obvious breakpoints when the power disconnector is disconnected .（  √  ）

100、【 Judgment questions 】 Full time signal commander and rigger shall be set for crane operation , One person shall not give consideration to both signal command and rigging operation at the same time .（  √  ）

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