Source of question bank: Safety production mock examination, WeChat public account mini program
2021 crane driver (bridge crane only) exam question bank and crane driver (bridge crane only) exam skills, including crane driver (bridge crane only) exam questions and analysis and crane driver (bridge crane only) exam skills practice . Combined with the latest syllabus of the national crane driver (bridge crane only) exam and the summary of the real questions of the crane driver (bridge crane only) exam, it is helpful for crane drivers (bridge crane only) to review the mock exam. Practice before.
1. [True and True] () The working temperature of the brake wheel should generally not be higher than the ambient temperature of 120°C. (√)
2. [True/True Question] If the pulley diameter is too small, the wire rope is easy to damage, but it will not affect the safe use and service life. (×)
3. [True and True] () Generally, when two steel wire ropes are used for lifting, the angle between 60° and 120° is considered ideal. (×)
4. [True and True] () The lower the ignition point, the easier it is to catch fire. (√)
5. [True/True Questions] The center of gravity and the center are a concept. (×)
6. [True and True] () The purpose of adjusting the main spring is to obtain a suitable braking torque. (√)
7. [True/True] () When the crane is working normally, it cannot be checked and repaired under power. (√)
8. [Judgement Question] The lifting mechanism of a general-purpose bridge crane is generally composed of a motor, a brake, a reduction box, wheels, and a drum. (×)
9. [True/Judgement] The connection between the end of the belt brake back gasket steel belt and the fixed part should be hinged. (√)
10. [True/True Question] When the open-air crane encounters strong winds with people above level 6, the operation should be stopped. (√)
11. [True and True] For bridge cranes equipped with door interlock protection devices, when one of the door interlocks is disconnected, the power supply of all mechanisms should be cut off. (√)
12. [True and True] The lifting weight of the crane is selected according to the external dimensions of the equipment. (×)
13. [True and True] () The condition of the buried object is unknown, and it can be lifted and pulled out. (×)
14. [True and True] () Understanding the working environment is one of the four elements of lifting operations. (√)
15. [Judgement Questions] () The "Special Equipment Safety Law of the People's Republic of China" stipulates that when special equipment fails or has abnormal conditions, the special equipment user should conduct a comprehensive inspection to eliminate the hidden danger of the accident before it can continue to be used. (√)
16. [True/True Question] Irrelevant personnel are prohibited from entering the driver’s cab to chat during crane operation. (√)
17. [True and True] The relay is used to directly control the main circuit. (×)
18. [True and True] No hemp rope shall be used for mobile hoisting machinery or places subject to greater force. (√)
19. [True and True] () Mechanical injuries when the equipment is in motion can be divided into four categories. (×)
20. [Judgement Question] () According to statistics, most of the causes of safety accidents of cranes are caused by illegal operations by crane drivers. (√)
21. [Judgment] The national standard number of my country's hoisting command signal is GB/T5082-1985. (√)
22. [True and True] () Lifting range refers to the vertical distance between the highest and lowest working position of the crane spreader. (√)
23. [Judgment] After one-phase disconnection of the power supply occurs during the full-load operation of the motor, its speed will drop rapidly and become weak, and the temperature rise will rise rapidly, but the winding current does not change much. (×)
24. [Single-choice question] Use a ladder to ascend, and the angle between the ladder and the ground should be around (). (B)
A、80°
B、65°
C、30°
25. [Single-choice question] Labor protection supplies refer to personal wear (wear) supplies provided to protect workers from () injury and occupational hazards during the production process, referred to as labor protection supplies. (C)
A. Failure
B. Machine
C. Accident
26. [Single choice] For lifting electromagnets without special requirements, the safety factor is generally (). (A)
A、2
B、3
C、6
27. [Multiple Choice Questions] 
(A)
A. No safety measures are required for strong winds above level 6
B. Do not hang under high-voltage lines
C. Sharp edges are not protected without hanging
28. [Multiple Choice Questions] 
(A)
A. Unidentified objects underground are not hung
B. Bulk materials are not tied tightly
C, slanting and hanging without hanging
29. [Single choice] () is an auxiliary component of the hydraulic system. (B)
A. Oil pump
B. Fuel tank
C. Cylinder
30. [Single-choice question] As shown in the figure, what is the name of the component with the arrow pointing to it? 
(A)
A. Hydraulic brake
B. Electromagnetic brake
C. Disc brake
31. [Single choice] "Special Equipment Safety Law of the People's Republic of China" is a part (). (A)
A. Law
B. Administrative regulations
C. Departmental regulations
32. [Single choice] The "Special Equipment Safety Law of the People's Republic of China" was promulgated by the National People's Congress (). (A)
A. Law
B. Administrative regulations
C. Safety technical specifications
D. Standards.
33. [Single-choice questions] The "three good" in lifting operations refer to: good management, good use and (). (C)
A. Hide well
B. Put it away
C. Fix it
34. [Single-choice questions] Lifting operators must continuously learn new technologies and new processes, and strive to improve their own (). (B)
A. Working methods
B. Operating skills
C. Thoughtfulness
35. [Single-choice question] As shown in the figure, what safety mark does this icon indicate? 
(C)
A. Must wear a gas mask
B. Must wear a mask
C. Must wear a dust mask
D. Must wear a mask
36. [Single-choice question] In the crane parameters, the nominal unit of the crane, trolley, and lifting speed is: (). (C)
A. Turn/minute
B, meters per second
C, m/min
37. [Single choice] The components that convert the mechanical energy of the prime mover into hydraulic energy are: (). (C)
A. Hydraulic motor
B. Hydraulic cylinder
C. Hydraulic pump
38. [Single-choice question] The shaft or shaft hole diameter of the brake parts worn to the original diameter () should be scrapped. (C)
A、10%
B、4%
C、5%
39. [Single choice] Electromagnetic chuck is generally not allowed to lift metal objects above ()℃. (C)
A、100
B、150
C、200
40. [Single-choice question] Performing operations at a height that is 2 meters or more from the reference plane of the fall height, where it is likely to fall, is called (). (C)
A. Dangerous work
B. Dangerous conditions
C. Work at height
41. [Single-choice question] According to the "Special Equipment Safety Law of the People's Republic of China", in violation of the provisions of this law, special equipment safety management personnel, inspection personnel and operators do not perform their job duties, violate operating rules and relevant safety rules and regulations, (), Revocation of qualifications of related personnel. (B)
A. Causes consequences
B. Cause the accident
C. Cause adverse effects
42. [Single-choice question] my country has classified 56 kinds of poisons with wide occupational exposure and great harm, which are divided into (). (A)
A, level four
B, level five
C, level six
43. [Single-choice question] When the person's breathing and heartbeat stop after an electric shock, they need to perform extracorporeal heart squeezing and mouth-to-mouth artificial respiration at the same time, and call the hospital for help. The emergency number is (). (A)
A、120
B、110
C、119
44. [Multiple Choice Questions] The use of seat belts should be (), and the parts of the seat belt must not be disassembled arbitrarily. (BCD)
A, low hanging and high use
B, high-hanging low-use
C, not too long
D. Pay attention to prevent loosening
45. [Multiple choice questions] Special high altitude operations include (), night high altitude operations, live high altitude operations, suspended high altitude operations, and rescue high altitude operations. (ABCD)
A. High winds work
B. Working in high places with different temperatures
C. Working at heights in snow
D. Working at heights in rainy days
46. [Multiple choice questions] Three basic conditions must be met for combustion, namely: () and ignition source, one of which is indispensable. (BC)
A, temperature
B. Combustibles
C. Combustion
D. Humidity
47. [Multiple-choice questions] When lifting and turning over a hoisted object, the key for operators to ensure safe and smooth turning is (). (BC)
A. Reasonable object volume
B. Correctly estimate the weight and center of gravity of the object
C. Choose the right hanging point
D. Lifting speed
48. [Multiple choice questions] Crane safety protection devices include: () (ABC)
A. Torque limiter
B. Amplitude limiter
C. Walking limiter
D. Operation limit
49. [Multiple choice questions] The basic conditions for burning are: (). (BCD)
A, certain temperature
B. Combustibles
C. Combustion
D, ignition source
50. [Multiple-choice questions] When hoisting at high places, to ensure safety, () is required. (ABD)
A. Set hoisting restricted area
B. Strengthen on-site supervision and management
C. Enhance self-protection awareness
D. No outsiders are allowed to enter the restricted area
The above is the 2021 crane driver (bridge crane only) exam question bank and crane driver (bridge crane only) exam skills. Support the examination questions for accurate crane drivers (only bridge cranes) in all regions of the country, and support the exercises of the safety qualification certificate, special operation certificate, vocational skill appraisal and other work types.