2022 brazing test simulation 100 questions and answers

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

2022 The brazing retraining question bank in is the question bank of all brazing examinations, and the question bank of the new textbook outline ！2022 Brazing test simulation 100 The questions and answers are based on the new brazing test outline . The real brazing test questions can be learned from the question bank at any time according to the safety production simulation test .

1、【 Single topic selection 】 The symbol for elongation of metallic materials is ().（ A ）
A、A
B、R
C、Z
2、【 Single topic selection 】 () Inhalation of oxygen into the human body hinders the transport of oxygen in the body or the function of tissue to absorb oxygen , Make human tissue necrosis due to hypoxia .（ A ）
A、 carbon monoxide
B、 Nitrogen oxides
C、 ozone
3、【 Single topic selection 】 The following statement about flame brazing is wrong ().（ B ）
A、 The outer flame of neutral flame is oxidizing
B、 Volatile elements shall be lost as much as possible during flame brazing
C、 The highest temperature of neutral flame is at the end of flame core 2mm to 4mm Of the inner flame
4、【 Single topic selection 】 Which of the following liquids has the largest flash point ().（ B ）
A、 methanol
B、 Tung oil
C、 Ethanol
5、【 Single topic selection 】 The following ignition sources are not included ().（ A ）
A、 hydrogen
B、 Heat of chemical reaction
C、 Spark generated by static charge
6、【 Single topic selection 】 The fire extinguisher that cannot be used when acetylene gas is on fire is ().（ B ）
A、 Carbon dioxide fire extinguisher
B、 Foam extinguisher
C、 Dry powder fire extinguisher
7、【 Single topic selection 】 The following statement about induction brazing is wrong ().（ A ）
A、 The disadvantage is that it is especially not suitable for brazing of rotating bodies
B、 It heats quickly
C、 It depends on the induced current generated by the weldment in the alternating magnetic field ( Eddy current ) Resistance heat to braze
8、【 Single topic selection 】 The conveyor belt of the conveyor type automatic induction brazing machine is ().（ C ）
A、 Rubber tape
B、 Conductive tape
C、 Asbestos tape

9、【 Single topic selection 】 The following statement about the fixed smoke exhaust hood is wrong ().（ B ）
A、 This type of exhaust device has side extraction 、 Up and down
B、 The exhaust device of up pumping is easy to operate , The exhaust effect is also good
C、 It is suitable for fixing the welding operation site 、 When the weldment is small
10、【 Single topic selection 】 What is wrong in the following statement about immersion brazing is ().（ A ）
A、 The price of the equipment is moderate , Low energy consumption
B、 Suitable for mass continuous production
C、 The workpiece heats up quickly 、 Heat evenly 、 Temperature controllable
11、【 Single topic selection 】 Safety helmet is a hard helmet made of a variety of materials , To protect people () And specially designed .（ C ）
A、 Foot
B、 chest
C、 Head
12、【 Single topic selection 】 The following statement about salt bath brazing is wrong ().（ A ）
A、 Salt bath brazing is mainly used for brazing of workpiece
B、 Salt bath brazing uses molten salt solution as the heating medium of workpiece
C、 Most bath salts commonly used in production are chlorides 、 Salts such as fluoride and cyanide
13、【 Single topic selection 】 The color ring of the purified compressed air pipe is ().（ B ）
A、 Red
B、 white
C、 Blue
14、【 Single topic selection 】 Use fraud 、 The labor contract concluded by means of threat is ( ) The labor contract .（ B ）
A、 It works
B、 Invalid
C、 Changeable
D、 Revocable
15、【 Single topic selection 】 The brazing process that consumes a lot of solder is ().（ C ）
A、 Salt bath brazing
B、 Immersion brazing
C、 Metal bath brazing
16、【 Single topic selection 】 The longest range fire extinguisher is ().（ A ）
A、 Foam extinguisher
B、1211 Fire extinguisher
C、 Carbon dioxide fire extinguisher
17、【 Single topic selection 】 The induction heating material must be ().（ A ）
A、 conductor
B、 semiconductor
C、 insulator
18、【 Single topic selection 】 Construction general contracting , architectural engineering （） The construction of the project must be completed by the general contractor .（ B ）
A、 Foundation engineering
B、 Main structure
C、 Decoration works
D、 More than half of the quantities
19、【 Single topic selection 】 The temperature of the arc is extremely high , The central temperature can reach ().（ B ）
A、4000℃ to 10000℃
B、6000℃ to 10000℃
C、6000℃ to 12000℃
20、【 Single topic selection 】 To develop 《 Construction Law of the people's Republic of China 》 The purpose of is to strengthen the understanding of construction activities （）, Maintain the order of the construction market , Ensure the quality and safety of construction projects , Promote the healthy development of the construction industry .（ D ）
A、 Comprehensive management
B、 Comprehensive supervision
C、 Supervision and governance
D、 supervision
21、【 Single topic selection 】 A real estate development group contracted out a high-end community construction project to Tianding construction company . To recover investment for early opening , The real estate development group threatened to settle the project funds , Reduce the construction period agreed in the contract , Tianding construction is required to deliver and put into the market in advance . So , The construction enterprise recruits a large number of inexperienced social personnel from the talent market , Put into operation without systematic training , Finally, the newly recruited Li and others lack awareness of potential safety hazards , Smoking when working in the woodworking operation room , Cause a fire . Please answer the questions ：
（2） The first basic education in safety production that newly recruited Li and other new employees must receive is （）.（ D ）
A、 Safety ideological education
B、 Safety legal education
C、 Safety skill education
D、 Three level safety education
22、【 Single topic selection 】 Arc brazing is compared with flame brazing ().（ A ）
A、 The heating zone is narrow , Small heat input
B、 The heating zone is narrow , Large heat input
C、 The heating zone is wide , Small heat input
23、【 Single topic selection 】 Arc brazing is compared with furnace brazing and vacuum brazing ().（ C ）
A、 Quite a
B、 Consume large , The high cost
C、 Less consumption , The cost is low
24、【 Single topic selection 】 The same wire feeding speed in arc brazing , The welding current required for thicker welding wires ().（ C ）
A、 smaller
B、 unchanged
C、 more
25、【 Single topic selection 】 There is a gap between the helmet shell and the helmet lining of the safety helmet 25-50mm Vertical distance and 5 One 20mm Horizontal distance , These two distances play the role of external force () And buffering , Not only can't the object hit the head directly , And the hard cap shell won't touch the head , Avoid indirect damage from the cap shell .（ B ）
A、 enlarge
B、 absorption
C、 Reduce
26、【 Single topic selection 】 When resistance brazing ,() It will cause uneven temperature distribution of the workpiece and produce stress 、 deformation 、 Crack .（ C ）
A、 The current is too high
B、 The grid frequency is too high
C、 Heating speed is too fast
27、【 Single topic selection 】 When welding workpiece with TIG welding ,().（ B ）
A、 Welding wire needs to be filled
B、 Welding wire can be added , Welding wire may not be added , As the case may be
C、 There is no need to add welding wire
28、【 Multiple choice 】 according to GB/T6067.1—2010《 Safety code for hoisting machinery No 1 part ： General 》 Regulations , The conditions that the driver should have are :（）（ ABCD ）
A、 Have corresponding educational level ;
B、 Over the age of 18 One year old ;
C、 In sight 、 Be competent in listening and response ;
D、 Have the physical strength to operate the crane safely
29、【 Multiple choice 】 The basic requirements for steam regulation methods are （）.（ ABCDE ）
A、 Adjust the inertia or time lag to be small
B、 The adjustment range should be large
C、 The structure of the equipment is simple and reliable
D、 It has little effect on the efficiency of the cycle
E、 Additional equipment and metal consumption should be small
30、【 Multiple choice 】55． according to 《 Regulations on the administration of safe production of construction projects 》, The following statement is true ().（ ACE ）
A、 The Department responsible for the supervision and administration of production safety under the State Council shall act in accordance with 《 Production safety law of the people's Republic of China 》 The provisions of the , Implement comprehensive supervision and management of safety production of national construction projects
B、 The competent construction administrative department of the local people's government at or above the municipal level shall, in accordance with 《 Production safety law of the people's Republic of China 》 The provisions of the , Implement comprehensive supervision and management of the work safety of construction projects within their respective administrative areas
C、 The departments responsible for the supervision and administration of production safety under the local people's governments at or above the county level shall, in accordance with 《 Production safety law of the people's Republic of China 》 The provisions of the , Implement comprehensive supervision and management of the work safety of construction projects within their respective administrative areas
D、 The local people's governments at or above the municipal level shall supervise and administer the safe production of construction projects throughout the country
E、 The State Council railway 、 traffic 、 Water conservancy and other relevant departments shall divide their responsibilities in accordance with the provisions of the State Council , Be responsible for the supervision and management of safety production of relevant professional construction projects
31、【 Single topic selection 】 The principle of prevention means that safety management should focus on prevention , That is, through effective management and technical means , Prevent unsafe behaviors of people and unsafe conditions of objects , Try your best to reduce the probability of accidents . Which of the following is not a principle of application of the precautionary principle （）.（ C ）
A、 The principle of accidental loss
B、 The principle of causality
C、 The principle of supervision
D、3E principle
32、【 Single topic selection 】 The wrong thing about electric shock rescue is （）.（ C ）
A、 First, get the person who gets an electric shock out of the power supply as soon as possible
B、 Timely rescue is very important
C、 The rescue should be sent to the hospital
D、 Rescue must be carried out on site
33、【 Single topic selection 】 The heat pipe used on the boiler is used for ____ Heat recovery .（ C ）
A、 steam
B、 Condensate
C、 smoke
34、【 Multiple choice 】 Construction site professionals ’ Ann Full production Pass the mock exam at one point ’ Job responsibilities are divided into ( ) level .（ CD ）
A、 planning
B、 perform
C、 be responsible for
D、 Participate in
E、 The implementation of
35、【 Single topic selection 】 At the construction site , There is no enclosure at the edge of the working face or the height of the enclosure is lower than （） Work at heights during work , It is called edge operation .（ B ）
A、60cm
B、80cm
C、100cm
D、120cm
36、【 Multiple choice 】 Wang was appointed as the construction project manager of a large project , The correct statements about their safety responsibilities are ().（ BC ）
A、 Work safety rules and regulations should be formulated
B、 Implement the safety production responsibility system
C、 Ensure the effective use of safety production expenses
D、 Safety production rules and regulations and operating procedures
E、 Formulate safety construction measures 、 Eliminate potential safety accidents
37、【 Single topic selection 】 The petitioner is not satisfied with the review opinion , From the date of receipt of a written reply ( ) Within days, a request for review shall be made to the administrative organ at the next higher level .（ B ）
A、15
B、30
C、45
D、60
38、【 Single topic selection 】 The basic structural members of the hanging basket are ( ).（ A ）
A、 Linkage
B、 Suspended platform
C、 Hoist
D、 Electrical control system
39、【 Multiple choice 】 A brief account of the accident ： In a bulk terminal , The crane operator is grasping and lifting stones in the cabin , Worker Luo walked out of the cabin , The operator did not pay attention to its entry , Causing the grab to hit Luo's back , He died after being sent to the hospital . Accident investigation ： The crane has passed the regular inspection , Use within the validity period , The inspection found no equipment defects related to the accident . Operators work with certificates , No illegal operation is found . Accident cause analysis ：（）（ AC ）
A、 Lack of on-site safety management
B、 The equipment is defective
C、 Not equipped with sufficient lighting at the operation site
D、 The safety device fails
40、【 Multiple choice 】 Use the leased mechanical equipment, construction machines and tools and accessories , By construction () Joint acceptance .（ BCDE ）
A、 Department in charge
B、 The general contractor
C、 Subcontractors
D、 Rental unit
E、 Installation unit
41、【 Multiple choice 】 According to the casualties and damage caused by the accident , Can be divided into ：（）.（ ABCD ）
A、 Major accident
B、 Major accident
C、 Very important
D、 General accidents
42、【 Single topic selection 】 The function of variable pressure steam accumulator , The boiler is under external load ____ when , The excess steam is fed into and heated up the saturated water in the heat accumulator .（ A ）
A、 low
B、 high
C、 unchanged
43、【 Multiple choice 】 According to the position of the wall, it can be divided into ( ).（ ABCD ）
A、 Interior wall
B、 The outer wall
C、 Cross wall
D、 Longitudinal wall
E、 Partition
44、【 Multiple choice 】 To develop 《 Regulations on reporting, investigation and handling of production safety accidents 》 In order to ()（ ABCD ）
A、 Standardize the report of production safety accidents
B、 Standardize the investigation and handling of production safety accidents
C、 Implement the accountability system for production safety accidents
D、 To prevent and reduce production safety accidents
E、 Strengthen the reporting, investigation and handling of work safety accidents by government administrative departments
45、【 Multiple choice 】（） Do not mix with oxidants 、 Inflammables 、 Store explosives together .（ AB ）
A、 Strong base
B、 Strong acid
C、 Barium chloride
D、 potassium chloride
46、【 Single topic selection 】 Under prescribed conditions , When diesel oil is cooled to the temperature when it is foggy or turbid due to the appearance of wax crystals, it is called ： Diesel （）.（ B ）
A、 Freezing point
B、 Cloud point
C、 Cold filter point
47、【 Multiple choice 】《 Safety Law of the people's Republic of China on special equipment 》 Regulations , Special equipment inspection 、 Testing organization and its inspection 、 Inspectors shall produce special equipment according to law 、 business 、 Provided by the user （） The test of 、 Testing services .（ ACDE ）
A、 Security
B、 In time
C、 reliable
D、 convenient
E、 The good faith
48、【 Single topic selection 】 following （） It is not a major repair of the boiler .（ C ）
A、A Stage boiler drum 、 External steam water separator 、 Replacement of Desuperheater and centralized downcomer and repair welding of main weld
B、A The whole set of heating surfaces of the first stage boiler 50% Replace the above
C、A The first-class boiler changes the combustion mode of the boiler
D、A Repair of welds on the main plate beam of class I boiler
49、【 Single topic selection 】 One of the obligations of filling vehicle cylinders in the filling station is （）.（ C ）
A、 Be responsible for the maintenance of gas cylinders 、 Maintenance work ;
B、 Be responsible for the inspection of gas cylinders ;
C、 Be responsible for publicizing safe use knowledge to cylinder users ;
D、 Be responsible for the safe use of vehicle cylinders .
50、【 Single topic selection 】 The general knowledge requires the standard staff to be familiar with inorganic cementitious materials 、 concrete 、 Types of mortar and other main building materials 、 nature , Concrete and ( ), Application of building energy-saving materials and products .（ D ）
A、 Workability of mortar
B、 Mortar fluidity
C、 Concrete mix design
D、 Mortar mix design
51、【 Multiple choice 】 For newly installed or overhauled cranes , Must be carried out （）.（ BCD ）
A、 General test
B、 No load test
C、 Static overload test
D、 Dynamic overload test
52、【 Multiple choice 】 The vehicle must be checked before leaving （）.（ ABCD ）
A、 Brakes
B、 Steering system
C、 Handle 、 Whether the signal device is reliable
D、 fuel 、 water 、 Whether the lubricating oil is sufficient .
53、【 Judgment questions 】 To prevent welding cracks , The weldment shall be preheated to 150~250℃.（ √ ）
54、【 Judgment questions 】 Low carbon tempered martensite has the characteristics of quite high strength and good combination of plasticity and toughness .（ √ ）
55、【 Judgment questions 】 There is no vibration when the static pile driver works 、 Noiseless 、 The price is low .（ × ）
56、【 Judgment questions 】《 Regulations on safety supervision of special equipment 》（2009 Annual revision ） Regulations ： Special equipment accidents are divided into particularly serious accidents 、 Major accidents and ordinary accidents .（ × ）
57、【 Judgment questions 】 The concrete mixed with pozzolanic Portland cement and fly ash Portland cement shall not be less than 7d.（ × ）
58、【 Judgment questions 】 New situations after the accident report , There is no need to make a supplementary report in time .（）（ × ）
59、【 Judgment questions 】 Chemical explosion , It is due to the chemical changes of substances in a very short time , Form other substances , The phenomenon of releasing a large amount of heat and gas at the same time .（ √ ）
60、【 Judgment questions 】 During maintenance , Wipe the material 、 The kerosene and gasoline fall into the cylinder 、 Gas storage barrel and air duct can cause shrinkage · Security Production mould I plan to pass the exam at one point · Machine explosion .（ √ ）
61、【 Judgment questions 】 The higher the frequency of induction heating , The faster the surface is heated .（ √ ）
62、【 Judgment questions 】 The switch device of the induction heating power supply of the induction brazing machine can be installed outside the cabinet for convenient use .（ × ）
63、【 Judgment questions 】 implement ISO14000 accord with “ sustainable development ” The national policy of .（ √ ）
64、【 Judgment questions 】 The moisture of air drying basis is total moisture .（）（ × ）
65、【 Judgment questions 】 Elevator electrical equipment with three-phase four wire power supply , Neutral protection ( namely TN) In the system , It is forbidden to ground the elevator electrical equipment separately .（ √ ）
66、【 Judgment questions 】 Organic soft soldering flux has high chemical activity , The ability to remove oxides is very strong .（ × ）
67、【 Judgment questions 】（） hydrogen 、 Ethane 、 carbon monoxide 、 Methane is a flammable gas .（ √ ）
68、【 Judgment questions 】 To improve steam quality, the condensate should be improved 、 Quality of make-up water .（ √ ）
69、【 Judgment questions 】 The main hazards of flame brazing are fire and explosion , therefore , Fire prevention 、 Explosion proof is flame 、 Safety student production Pass the mock exam at one point 、 The main task of brazing .（ √ ）
70、【 Judgment questions 】 When brazing in the furnace , For electric heating equipment that may be short circuited through furnace lining , After measuring the insulation resistance , The furnace lining shall be fully dried and cooled to ambient temperature .（ × ）
71、【 Judgment questions 】 Supervising the implementation of standards is an important means to implement standards , The purpose is to ensure the safety and quality of the project 、 To protect the environment 、 Protect personal health .（ √ ）
72、【 Judgment questions 】 In case of overload protection failure , Heavy overload still has the risk of car sinking （ √ ）
73、【 Judgment questions 】（）《 Safety Law of the people's Republic of China on special equipment 》 Regulations , The Department responsible for the safety supervision and administration of special equipment shall comply with the provisions of this law , Production of special equipment 、 business 、 User and inspector 、 The inspection organization shall carry out supervision and inspection .（ √ ）
74、【 Judgment questions 】 When transferring goods with grab , In the work area , No one is allowed to walk or stay .（ √ ）
75、【 Judgment questions 】 The less the number and workload of unscheduled maintenance , Indicates that the higher the level of Management .（ √ ）
76、【 Judgment questions 】 The safety valve of the boiler in use shall be calibrated at least once a year .（ √ ）
77、【 Judgment questions 】 ‘ Ann Full production simulation test Try a little ‘ When the current is small , The droplet is spray transition .（ × ）
78、【 Judgment questions 】（） Penstock components include pipes 、 pipe fitting 、 Flange 、 shim 、 a fastening 、 valve 、 Safety protection facilities , Excluding expansion joints 、 Flexible joint 、 Pressure hose 、 filter 、 Instruments and separators in the pipeline .（ × ）
79、【 Judgment questions 】 Due to infant physiology 、 Psychological satisfaction is easy to establish a sense of trust , Therefore, it is easy to form negative personality characteristics .（）（ √ ）
80、【 Judgment questions 】 Resistance heating brazing , The brazed part forms a path between the electrodes as a conductor , Rely on the resistance heating of brazing metal , At the same time, it can also be heated by heat conduction from the electrode .（ √ ）
81、【 Judgment questions 】 When resistance brazing, choose strong or weak conditions and the current and time required for metals with different properties and thickness , There is still an upper 、 Lower limit , Beyond this limit , A qualified weld will not be formed .（ √ ）
82、【 Judgment questions 】 Resistance brazing is the process of pressing the brazed joint of two parts with electrodes , Make the current flow through the brazing surface to form a circuit , It is mainly heated by the resistance heat generated in the brazed surface and the adjacent base metal .（ √ ）
83、【 Judgment questions 】 For resistance brazing, always keep the contactor contacts clean .（ √ ）
84、【 Judgment questions 】 The use of qualified special equipment is the most basic condition to ensure the safe operation of special equipment .（）（ √ ）
85、【 Judgment questions 】 In salt bath brazing , Add a small amount of flux to neutral chlorine salt , Such as borax 、 Cryolite, etc , To improve the antioxidant capacity of salt bath .（ √ ）
86、【 Judgment questions 】 Occupational health examination is to implement the obligations of the employer 、 An important guarantee for the realization of workers' rights , It is the premise of implementing the occupational disease diagnosis and identification system , It is also the basis of the social security system , It helps to protect the health rights and interests of workers , Reduce health damage and economic loss , Reduce the social burden .（ √ ）
87、【 Judgment questions 】 The occupational health examination institution shall ensure that the chief examiners engaged in occupational health work have corresponding professional skills , At the same time, you should also be familiar with the possible occupational hazard factors in the workplace , In order to analyze the relationship between the health status of workers and their professional activities , Judge whether they are suitable for the job .（ √ ）
88、【 Judgment questions 】 The air source of air supply Helmet Mask shall be purified fresh air , Oxygen can be used instead of , Provide workers with a good working environment .（ × ）
89、【 Judgment questions 】 Brazing equipment shell 、 The shell of electrical control box shall be equipped with protective grounding or protective neutral connection device . For example, the metal structure of a building that is reliably connected with the earth 、 Metal pipes laid underground 、 Oxygen pipes, etc. are used as natural grounding electrodes .（ × ）
90、【 Judgment questions 】 The strength of braze joint always increases with the increase of electrode pressure .（ × ）
91、【 Judgment questions 】 There are few impurities in killed steel , But segregation ’ The safety production simulation test is a little through ’ More .（ × ）
92、【 Judgment questions 】 When indirectly heating resistance brazing, current can pass through multiple workpieces .（ × ）
93、【 Judgment questions 】 The width exceeds 300mm Lintel shall be set at the upper part of the opening .（ √ ）
94、【 Judgment questions 】 The combustion equipment is damaged , When the furnace wall collapses or the boiler frame is burned red, which seriously threatens the safe operation of the boiler , The boiler shall be shut down immediately .（ √ ）
95、【 Judgment questions 】（） Parameters of hoisting machinery , It is an index indicating the working performance of hoisting machinery , It is also the basis of design .（ √ ）
96、【 Judgment questions 】 Around the high-frequency welding machine , In particular, the workers' operating position shall be paved with pressure resistant materials 35kV Insulated rubber sheet .（ √ ）
97、【 Judgment questions 】 Gas flame welding uses combustible gas ( Such as acetylene, liquefied petroleum gas, hydrogen propane, etc ), Burn in air in a suitable proportion .（ × ）
98、【 Judgment questions 】 Welding noise will have adverse effects on human nervous system, cardiovascular system, etc .（ √ ）
99、【 Judgment questions 】 Vacuum heating will not cause burns to human body .（ √ ）
100、【 Judgment questions 】 Higher brazing temperature may cause the evaporation of elements with low boiling point and high vapor pressure , Form pores , The solder is oxidized to produce welding slag and the hardness of the matrix is reduced, and the microstructure is changed , Resulting in the decrease of joint strength .（ √ ）
Support the examination questions of precision brazing operation 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 .