Test question bank and online simulation test for special operation certificate of construction scaffolder (special type of construction work) in 2022

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

2022 Construction scaffolder ( Special types of construction work ) Construction scaffolder ( Special types of construction work ) National question bank real questions over the years ！2022 Construction scaffolder ( Special types of construction work ) The special operation certificate examination question bank and online simulation examination are based on the construction scaffolder ( Special types of construction work ) The latest textbook compilation . Construction scaffolder ( Special types of construction work ) The simulated examination question bank can check all the question banks at any time according to the point of safety production simulated examination .

1、【 Multiple choice 】 The following shapes that belong to geometrically variable systems are ( ).（ ABD ）

A、 rectangular

B、 The diamond

C、 triangle

D、 parallelogram

2、【 Multiple choice 】 The correct way to set up a safety net is ( ).（ ABCD ）

A、 The distance between the flat net and the object below shall be greater than 3000mm

B、 The net should be close to or overlapped with the net , The gap should be less than 80mm

C、 The fixed nodes of the tether and the edge of the net are evenly distributed , The spacing should be less than 500mm

D、 It is strictly forbidden to replace the tie rope with binding wires such as thin steel wire

3、【 Multiple choice 】 The permanent load must have ( ) Equal conditions .（ ABC ）

A、 Does not change over time

B、 Long term effect on structure

C、 The action position on the structure remains unchanged

D、 Cyclical change

4、【 Multiple choice 】 The basic way to look at the picture is ( ).（ ABCD ）

A、 From the outside in 、 From big to small

B、 From coarse to fine

C、 Drawings and instructions look at each other

D、 The building construction drawing and the structural construction drawing look at each other

5、【 Multiple choice 】 The binding materials of bamboo scaffold mainly include ( )（ ABC ）

A、 Galvanized steel wire

B、 Bamboo strips

C、 Plastic strips

D、 Plastic rope

6、【 Multiple choice 】 The butt laying of scaffold board shall meet the following requirements ( ).（ ABC ）

A、 Two transverse horizontal bars must be set at the joint

B、 The plate head extends out 130-150mm

C、 The sum of the extension of the two plate heads ﹤300mm

D、 The sum of the two outstretched plates ﹥300mm

7、【 Multiple choice 】 Portal steel pipe scaffold is used for vertical connection 、 The components of the lower gantry are ( ).（ AC ）

A、 Connecting rod

B、 Cross bridging

C、 Lock arm

D、 Scaffold board

8、【 Single topic selection 】 General accidents , It means causing 3 Less than people died , perhaps ( ) Seriously injured , or 1000 Accidents with direct economic losses below 10000 yuan .（ B ）

A、10 More people

B、10 People here

C、10 More people 50 People here

D、50 People here

9、【 Single topic selection 】 Any unit or individual , For potential accidents or illegal acts of production safety , Have the right to report to ( ) Report or report .（ B ）

A、 police

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

C、 The construction unit of the project

D、 The establishment unit of the project

10、【 Single topic selection 】 Equal size in Mechanics 、 In the opposite direction 、 The force system composed of two forces with parallel action lines is called ( ).（ B ）

A、 Moment

B、 Couple

C、 The synthesis of force

D、 The decomposition of force

11、【 Single topic selection 】 The labor contract is in accordance with 《 The labor contract law of the People's Republic of China 》 The regulation is confirmed to be invalid , Causing damage to one party ,( ) Assume liability for compensation .（ C ）

A、 Both parties jointly

B、 Neither party will

C、 The party at fault

D、 Negotiate and mediate to decide which party

12、【 Single topic selection 】 The bottom step distance of scaffold shall not be （）.（ A ）

A、 Greater than 2m

B、 Greater than 3m

C、 Greater than 3.5m

D、 Greater than 4.5m

13、【 Single topic selection 】 When designing the attached lifting scaffold , Under the decoration state, it is calculated according to the working surface of several floors （）（ B ）

A、 First floor

B、 On the second floor

C、 Three layers

D、 four layers

14、【 Single topic selection 】 When the office space on the construction site 、 When the dormitory is arranged in groups , The fire prevention distance can be appropriately reduced , However, the fire prevention distance between temporary rooms in the group shall not be less than 3.5m, When the combustion performance grade of building components is （） Class time , The fire spacing can be reduced to 3m.（ A ）

A、A

B、B

C、C

D、D

15、【 Single topic selection 】 In a pair of equal sizes 、 Turn the opposite 、 Under the action of a couple whose action surface is perpendicular to the rod axis , Any two cross sections of the member rotate relative to each other , It's called ( ).（ C ）

A、 Stretch and compress

B、 shear

C、 Reverse

D、 bending

16、【 Single topic selection 】 The following statement about construction elevator is correct （）.（ C ）

A、 The root limit switch must have automatic reset function

B、 The limit switch automatically cuts off the main power supply at the end of the stroke

C、 The rated installation load is the maximum allowable load of the cage under the installation condition .

D、 The suspender is a lifting device on the construction elevator to assist in loading goods

17、【 Single topic selection 】 National standards stipulate that industrial enterprises （） Should not exceed 85dB.（ B ）

A、 floodlight

B、 noise

C、 hi-fi equipment

D、 loudspeaker

18、【 Single topic selection 】 Production and business operation entities shall establish and improve hidden dangers of production safety accidents （） The system .（ C ）

A、 Check to eliminate

B、 Check governance

C、 Troubleshooting and management

D、 Troubleshooting and monitoring

19、【 Single topic selection 】 Engineering , Often press roughly 1kgf≈( ) Make a conversion .（ B ）

A、1Ｎ

B、10Ｎ

C、100Ｎ

D、1000Ｎ

20、【 Single topic selection 】 The tower crane shall be equipped with lifting moment limiter . If equipped with lifting torque display device , Then the numerical error shall not be greater than... Of the actual value （）.（ D ）

A、±1%

B、±2%

C、±3%

D、±5%

21、【 Single topic selection 】 The lifting of live crossing frame is a combined type ( ) structure .（ A ）

A、 steel

B、 wood

C、 blend

22、【 Single topic selection 】 The fastener type formwork support frame is set in the longitudinal direction 、 Horizontal tie rods in both directions at the same time , You also have to set ( ).（ B ）

A、 Toe board

B、 Diagonal bar

C、 base

23、【 Single topic selection 】 The included angle between the throwing support and the ground shall be ( ).（ B ）

A、＜45°

B、45°—60°

C、60°

D、＞60°

24、【 Single topic selection 】 When connecting the pole , The joint of two adjacent rods shall not be in synchronization , And the vertical distance between the two joints shall be ( )mm.（ A ）

A、＞500

B、＜500

C、＞600

D、＜600

25、【 Single topic selection 】 When more than two frog rammers work at the same time , The left-right spacing shall not be less than （）m.（ C ）

A、3

B、4

C、5

D、6

26、【 Single topic selection 】 The factors that have a direct impact on the electrochemical corrosion of the boiler are （）.（ C ）

A、 Salt content

B、PH value

C、 Dissolved oxygen (do)

D、 Evaporation capacity

27、【 Single topic selection 】（） The arch and stiffness of the main beam of the bridge crane shall be checked 、 Measure or test .（ B ）

A、 Every six months

B、 Every year

C、 Every year and a half

D、 Every two years

28、【 Single topic selection 】 The maximum static load torque of the motor of the operating mechanism of the crown block , often （） Of the rated torque of the motor 0.7 times .（ A ）

A、 Small

B、 etc.

C、 Big

29、【 Single topic selection 】 To be investigated （） Producers and operators in China 、 Have an accident （） Construction of buildings 、 Survey and design 、 Supervision enterprises and other social service institutions and personnel shall implement corresponding occupational prohibition according to law 、 The industry is forbidden .（ A ）

A、 Criminal liability 、 Major responsibility

B、 civil liability 、 Overall responsibility

C、 civil liability 、 Major responsibility

D、 Criminal liability 、 Overall responsibility

30、【 Single topic selection 】 New situations after the accident report , A supplementary report should be made in time . From the date of the accident （） Intraday , The number of casualties caused by the accident has changed , A supplementary report should be made in time . Road traffic accidents 、 The fire accident starts from the date of occurrence 7 Intraday , The number of casualties caused by the accident has changed , A supplementary report should be made in time .（ D ）

A、10

B、15

C、20

D、30

31、【 Single topic selection 】 The chimney 、 The scaffold for the construction of round or square buildings such as water tower is up to 10m, Should be selected ( ) Make a wind rope .（ C ）

A、 Hemp rope

B、 Palm rope

C、 a wire rope

D、 reinforced

32、【 Single topic selection 】 Especially serious accident , It means causing ( ) More than people died , perhaps 100 More than people are seriously injured ( Including industrial poisoning , The same below ), perhaps 1 Accidents with direct economic losses of more than 100 million yuan .（ C ）

A、10

B、20

C、30

D、50

33、【 Single topic selection 】 Vehicles shall be set at the entrance and exit of the construction site （） facilities .
（ A ）

A、 Flushing equipment and flushing tank

B、 Flush the pump

C、 Protective facilities

D、 Emergency Access

34、【 Single topic selection 】 according to 《 Regulations on the administration of safe production of construction projects 》, The construction unit shall conduct construction according to different construction stages, surrounding environment and seasons 、 Climate change , Take corresponding safety construction measures at the construction site . Temporary suspension of construction on the construction site , The construction unit shall do a good job in site protection , The cost will be borne by （） To undertake , Or according to the contract .（ D ）

A、 Construction unit

B、 Construction unit

C、 The two sides

D、 Responsible party

35、【 Single topic selection 】 The handling of casualty accidents should be carried out in （） Close the case within days , Special circumstances shall not exceed 180 Japan . After the casualty accident is settled , The results should be publicly announced .（ C ）

A、30

B、60

C、90

D、120

36、【 Single topic selection 】 The main pressure parts of the boiler are assembled 、 Keep in storage 、 The role of purified steam and make-up water is （）.（ B ）

A、 Water wall

B、 Drum

C、 Convection tube bundle

D、 Header

37、【 Single topic selection 】 The vertical pole is the main component of the scaffold , Mainly bear ( ).（ B ）

A、 pull

B、 pressure

C、 Shear force

D、 Bending force

38、【 Single topic selection 】 The removal of formwork support system shall meet the requirements of specifications and special construction scheme . In the structure with load-bearing welded reinforcement skeleton as reinforcement , Formwork bearing the weight of concrete , The concrete shall reach the design strength （） Then the bearing formwork can be removed . When a load is placed on the structure of the removed formwork , Shall be accounted for separately .（ A ）

A、25%

B、30%

C、35%

D、50%

39、【 Single topic selection 】 Scaffold height ( )m when , Rigid wall connectors must be used .（ B ）

A、≤24

B、≥24

C、≤30

D、≥30

40、【 Single topic selection 】 Usually , The outer wheel Gallery line in the elevation of the house is ( )（ A ）

A、 Thick solid line

B、 Fine thread

C、 Solid line

D、 Dotted line

41、【 Single topic selection 】 The portal frame and accessories of portal steel pipe scaffold use ( ) Installation 、 Removal cycle , It should be checked once .（ A ）

A、 One

B、 3、 ... and

C、 3、 ... and

D、 Four

42、【 Single topic selection 】 Construction scaffolds and working platforms shall be erected firmly , Set handrails , And should （）.（ D ）

A、 No requirement

B、 Neat up and down

C、 Supervision and inspection

D、 Safety check calculation

43、【 Single topic selection 】 The height width ratio of portal support frame shall not be greater than （）（ A ）

A、3

B、4

C、5

D、6

44、【 Single topic selection 】 The types of work at heights are divided into ( ) And special work at heights .（ B ）

A、 Ordinary work at heights

B、 General work at heights

C、 Normal work at heights

D、 All wrong

45、【 Single topic selection 】 The height of work at height is ( ) when , It is called class I work at heights .（ B ）

A、2 Meters above

B、2 Meters to 5 rice

C、2 Meters to 7 rice

D、7 Meters above

46、【 Multiple choice 】 Which of the following facilities should be set on the vertical transportation receiving platform （）.
（ AD ）

A、 Protective railings on both sides

B、 Movable protective railings shall be set at the platform opening of protective railings on both sides

C、 Protective vertical net shall be set at the platform opening

D、 A safety door is set at the platform opening

E、 Fixed protective railings shall be set at the platform opening

47、【 Multiple choice 】 Installation of construction hoisting machinery 、 The dismantling units are （） Acting , Upon the proposal of relevant departments or employees of the unit , No measures are taken for potential accidents , As a result, major casualty accidents or other serious consequences occur , Criminal , For those directly responsible , Criminal responsibility shall be investigated in accordance with the relevant provisions of the criminal law .（ ACE ）

A、 No disassembly plan is prepared 、 Formulate safety construction measures

B、 Not supervised on site by professional technicians

C、 No self inspection certificate is issued

D、 The safe use instructions are not provided to the construction unit , Go through the handover procedures

E、 Issue false certificates

48、【 Multiple choice 】 The joints of longitudinal horizontal bars should be overlapped , There are the following when lapping （） specific requirement .（ ADE ）

A、 The lap length shall not be less than 1m

B、 Lap length 0.5m

C、 The distance from the edge of the end fastener cover plate to the end of the overlapping rod shall not be less than 500mm

D、 The distance from the edge of the end fastener cover plate to the end of the overlapping rod shall not be less than 100mm

E、 Equally spaced settings 3 Fixed with two rotary fasteners

49、【 Single topic selection 】 The construction unit that may cause occupational disease hazards shall （） Submit the pre assessment report of occupational disease hazards to the administrative department of health at the stage .（ B ）

A、 Design

B、 Feasibility study

C、 Completion acceptance

D、 Construction stage

50、【 Single topic selection 】 The minimum rated lifting capacity is （） Overhead cranes of more than tons must be equipped with overload limiters .（ C ）

A、10

B、15

C、20

D、25

51、【 Multiple choice 】 The safety level of supporting scaffold is Ⅰ Class is （）（ ADE ）

A、 Total load 18kN/㎡

B、 Total load 14kN/㎡

C、 Concentrated line load 16kN/m

D、 Concentrated line load 21kN/m

E、 Single point concentrated load 8kN

52、【 Single topic selection 】 In homework , When the impact energy of the pile hammer reaches the maximum energy , At the end of the day 10 The penetration value of the hammer shall not be less than （）.（ C ）

A、10mm

B、7mm

C、5mm

D、3mm

53、【 Multiple choice 】 The tower crane has passed self inspection 、 After passing the test , The general contractor shall organize （） And other units for acceptance ．（ ABCD ）

A、 lease

B、 install

C、 Use

D、 Supervisor

E、 Design Institute

54、【 Single topic selection 】 The circumferential welds of steel welded gas cylinders in the structure of welded gas cylinders shall not be more than （） strip .（ B ）

A、1

B、2

C、3

D、4

55、【 Single topic selection 】 The State implements the accountability system for production safety accidents , according to 《 Production safety law of the people's Republic of China 》 And the law 、 The regulations , investigate （） Legal liability of .（ A ）

A、 Persons responsible for production safety accidents

B、 Relevant enterprise leaders

C、 Technical staff

D、 project manager

56、【 Multiple choice 】 Give the shift leaders at the production site of the enterprise 、 The team leader and the dispatcher directly issue the order of stopping production and withdrawing personnel in the first time in case of danger （）.（ DE ）

A、 The right of punishment

B、 The right to know

C、 The right to sue

D、 Decision making power

E、 Command

57、【 Multiple choice 】 As shown in the figure , The following description is wrong ？（）
（ ABC ）

A、 The opening is small without danger , The template must be covered

B、 This hole , As long as the construction personnel pay attention, nothing will happen

C、 The hole must be hung with a safety net according to the regulations

D、 All reserved openings must be protected as required

58、【 Single topic selection 】 Welding rods must be stored in a well ventilated place ,（） In the warehouse , Electrodes used in important welding works , Especially low hydrogen electrode , most · Safety student Production simulation test try A little · It can be stored in a special warehouse .（ C ）

A、 standard

B、 clean

C、 dry

D、 Clean and tidy

59、【 Single topic selection 】 To ensure safety , Each rope clamp shall be tightened until the wire rope in the clamp is flattened （） As the standard .（ C ）

A、1／5

B、1／4

C、1／3

D、1／2

60、【 Single topic selection 】《 Regulations on reporting, investigation and handling of production safety accidents 》 Regulations , After the accident , Relevant units and personnel shall properly protect the accident scene and relevant evidence , No unit or individual may （）.（ D ）

A、 Damage the scene of the accident , Destroy relevant evidence

B、 Destroy the scene of the accident , Destroy relevant evidence

C、 Destroy the scene of the accident , Eliminate relevant evidence

D、 Destroy the scene of the accident , Destroy relevant evidence

61、【 Multiple choice 】 The construction enterprise has obtained the safety production license , Which of the following safety production conditions should be met :（）.（ ABCE ）

A、 establish 、 Improve the safety production responsibility system , Formulate complete production rules, regulations and operating procedures of safety enterprises

B、 The investment of funds required to ensure the safe production conditions of the unit

C、 Set up safety production management organization , Provide full-time safety production management personnel in accordance with relevant national regulations

D、 The management personnel and operators shall receive production education and training of safety enterprise at least once every two years and pass the examination

E、 Principal: Project Leader , The full-time safety production management personnel have passed the examination of the competent construction department or other relevant departments .

62、【 Multiple choice 】 The following problems are encountered during the operation of tower crane （） The operation shall be stopped in case of ：（ ABCD ）

A、 Bad weather ： Such as ： The heavy rain 、 heavy snow 、 The fog , Exceed the allowable working wind force and affect safe operation ;

B、 Electric leakage occurs in the crane ;

C、 The safety protection device fails ;

D、 Each transmission mechanism has abnormal phenomena and abnormal noise

63、【 Single topic selection 】 In violation of the 《 Regulations on the administration of safe production of construction projects 》 The provisions of the , The construction unit did not conduct construction according to different construction stages, surrounding environment and seasons 、 Climate change , Take corresponding safety construction measures at the construction site , Or the construction site of a construction project in the urban area is not enclosed , Ordered to make corrections within a time limit ; Failing to correct within the time limit , Order to suspend business for rectification , Concurrently （）.（ B ）

A、1 More than ten thousand yuan ,5 A fine of less than ten thousand yuan

B、5 More than ten thousand yuan ,10 A fine of less than ten thousand yuan

C、10 More than ten thousand yuan ,15 A fine of less than ten thousand yuan

D、15 More than ten thousand yuan ,20 A fine of less than ten thousand yuan

64、【 Single topic selection 】 The accident investigation team shall start from the date of the accident （） Submit the accident investigation report within days .（ D ）

A、15

B、30

C、45

D、60

65、【 Single topic selection 】 As shown in the figure , The main potential safety hazards are （‘ Safety production simulation exam One spot through ‘）
（ A ）

A、 The main node is not provided with a horizontal bar

B、 The safety net is broken

C、 Steel pipes are stacked randomly

D、 There is garbage on the scaffold that has not been cleaned up

66、【 Multiple choice 】 For tower crane hoisting operation , Attention should be paid to （）.
（ ABCE ）

A、 The lifting bucket must be hung by the licensed rigger

B、 The licensed commander must command the tower crane driver to lift

C、 The tower crane shall be lifted away from the construction area of ground workers

D、 The safety officer must supervise the lifting on site

E、 Operators can refuse to command against rules

67、【 Single topic selection 】 The removal of large formwork support system must （） Conduct .（ A ）

A、 From top to bottom

B、 Up and down at the same time

C、 Bottom up

D、 at will

68、【 Multiple choice 】 Class sun, riveter of the second equipment team of a company × And crane ban su × Prefabricate the steel structure column of the square furnace on the north open platform of the second workshop of the structure plant （600 Number H steel , Long 24.04mm）, In the process of lifting and straightening after the column is turned over （ Lifting height 240mm）, Welder to × And riveter sun × Stand on the outside of the west end of the column and hold the column steady , Li × Stand in the South , Grandchildren × Stand on the north side . After the column is lifted, the west end rotates southward under the action of torsion , Grandchildren × Jiang Li × Push away , Step to the south inside of the column and try to stabilize the column , However, due to the large inertia of the column , The west end collided with another column on the south side , Will sun × The left calf is squeezed in the middle , Cause tibia of left lower limb 、 Fibula fracture . Please judge the cause of the accident .（）（ ABCD ）

A、 Four lifting points were not used to lift the column when it was turned over and lifted in place , It's about using 2 Two lifting points cause imbalance , The column rotation caused by torsion creates an unsafe state . This is the direct and main cause of the accident

B、 Narrow working surface on site is also an important cause of accidents

C、 No special construction scheme has been prepared before hoisting , Therefore, the balance problem in the process of hoisting the column has not been subject to design calculation, but is selected by test

D、 Poor safety awareness of construction personnel , Be used to illegal and risky operations

69、【 Judgment questions 】 The locking condition of the upper bowl buckle is the key inspection content of the bowl buckle steel pipe scaffold .（ √ ）

70、【 Judgment questions 】 The laborer refuses to command the management personnel of the employing unit in violation of regulations 、 Forced to work at risk , It is deemed as a violation of the labor contract .（ × ）

71、【 Judgment questions 】 Safety Law of the people's Republic of China on special equipment 》 Regulations : The user of special equipment shall carry out regular maintenance and self inspection of the special equipment it uses , And make records .（ √ ）

72、【 Judgment questions 】 Small cross bar of single row scaffold , The length inserted into the wall shall be ＞180mm.（ √ ）

73、【 Judgment questions 】 After a safety accident , The person responsible for reporting fails to report or falsely reports the accident , Delay accident rescue , serious , It's about 3 Fixed-term imprisonment of not more than years or criminal detention .（ √ ）

74、【 Judgment questions 】6 month 20 The morning of , Chen, the electrician team leader, arranged for Liu, the electrician 、 General worker Wang moved and installed the evacuation indicator light in the ceiling on the west side of the second floor of an office building project .10 At around ,2 People arrive at the corridor below the operation point , For the convenience of operation , Wang went downstairs to get his hand-held emergency light . When Wang returned to the operation site , Liu was found lying on his back in the ceiling due to electric shock , Later, he was sent to the hospital for rescue and died .
（4） stay TN-S Grounding 、 In the neutral protection system ,N Line and PE All wires may be live .（ × ）

75、【 Judgment questions 】 In the configuration of switch box, it is strictly prohibited to use the same switch box to control three or more electric equipment ( Including socket ).（ × ）

76、【 Judgment questions 】 Operators in the electric basket can ’ Safety production simulation test Give it a try Diantong ’ So you don't have to wear a helmet 、 Fasten your seat belt .（ × ）

77、【 Judgment questions 】 Arc dynamic characteristic is an electrical characteristic of arc itself .（ × ）

78、【 Judgment questions 】 During internship operation , The employer shall appoint special personnel to guide and supervise the operation . The instructor shall obtain the corresponding special operation qualification certificate 、 To engage in related work 5 In the above 、 Choose from skilled workers without bad records .（ × ）

79、【 Judgment questions 】 If the holder dies or does not have full civil capacity , The provincial competent construction department shall revoke its qualification certificate .（ × ）

80、【 Judgment questions 】 Work at heights at different temperatures refers to work at heights in a high temperature environment .（ × ）

81、【 Judgment questions 】 When the scaffold is dismantled to the last two steps , The components can be thrown down .（ × ）

82、【 Judgment questions 】 Large cross bar extension of fastener type steel pipe scaffold , docking 、 Lap can be used .（ √ ）

83、【 Judgment questions 】 According to the erection materials, the scaffold can be divided into operation scaffold 、 Protective scaffolding and load-bearing support scaffolding .（ × ）

84、【 Judgment questions 】 Boiler water treatment system 、 After the equipment is installed “ Safety production simulation test Give it a try spot through “, No need to debug , It should be put into use immediately .（ × ）

85、【 Judgment questions 】 Anti slip strips shall be set on the scaffold board of the ramp , Spacing should be ＞300mm.（ × ）

86、【 Judgment questions 】 The outer side of the material lifting frame should be closed with a dense mesh safety net .（ × ）

87、【 Judgment questions 】 The welding cable shall have good conductivity , Firm and hard 、 Good insulation , Wear resistance , And it is a wire made of single strand copper wire .（）（ × ）

88、【 Judgment questions 】 The operators of climbing and erection must correctly use personal safety protection articles .（ √ ）

89、【 Judgment questions 】 The joints of two adjacent vertical poles shall not be set in the same step .（ √ ）

90、【 Judgment questions 】 When the hardness of raw water is high , The operating flow rate of the ion exchanger should be properly increased .（）（ × ）

91、【 Judgment questions 】 Installation of wall attachment device for building hoisting machinery 、 Jacking （ Add section ） The user shall be responsible for the work .（ × ）

92、【 Judgment questions 】 bamboo 、 The top pole of the wooden scaffold shall face upward with its small end .（ × ）

93、【 Judgment questions 】 Welding arc is supplied by welding power supply , A strong and lasting discharge between two electrodes with a certain voltage and the weldment in a gas medium .（ √ ）

94、【 Judgment questions 】 bamboo 、 Nylon rope shall not be used for binding the rod of wooden scaffold .（ √ ）

95、【 Judgment questions 】 bamboo 、 The effective diameter of the vertical pole of the wooden scaffold and the overlapping length shall be greater than 1500mm.（ √ ）

96、【 Judgment questions 】 Scaffold removal shall start from the top floor , Step by step down .（ √ ）

97、【 Judgment questions 】 The removal of scaffold must be carried out layer by layer from top to bottom , It is forbidden to work up and down at the same time .（ √ ）

98、【 Judgment questions 】 The vertical pole binding of scaffold shall not be less than 5 Avenue .（ × ）

99、【 Judgment questions 】 The qualification certificate is missing 、 Damaged , The holder shall declare on the relevant media that it is invalid , And submit the declared invalid materials to the city and county construction within one month ( Build ) The competent department applies for the renewal of the certificate .（ √ ）

100、【 Judgment questions 】 Height ＞24m The whole outer side of the double row scaffold shall be continuously provided with cross bridging .（ √ ）

Support the examination questions of precision construction scaffolders in all regions of the country , Support safety certificate , Special operation certificate , Exercises on the question bank of vocational skill appraisal and other types of work .