Question bank source: Safety production mock test, one-stop public account applet
The analysis of hoisting machinery command is generated by the safety production mock test, and the question bank of the hoisting machinery command certificate mock exam is compiled according to the latest version of the hoisting machinery command textbook. 2024 [Lifting Machinery Command] Find Analysis and Lifting Machinery Command Test Questions and Analysis
1. [Multiple choice question] In order to avoid shaking the object after lifting, it should be noted: (). （ ABD ）
A. It is not allowed to hang and drag objects
B. The angle of the wire rope should not be too small
C. No overloading
D. Diagonal hanging is not allowed
2. [Multiple choice questions] A brief history of the accident: In a steel structure factory, worker Zhou used an overhead crane with a rated load of 50 tons to lift a steel plate weighing 1.5 tons. Accident investigation: the hook has no anti-decoupling device, and the hook has been worn out, the amount of wear is greater than 15%, the accident crane user unit unauthorized transfer and transformation, unauthorized change of crane span, extended from the original 16.5 meters to 18 meters, without relevant procedures, without inspection, the equipment has defects such as the failure of the running limit device, and the operator Zhou has no lifting machinery operator certificate. Accident Cause Analysis (ACD)
A. There is no anti-decoupling device on the hook
B. Overload use
C. The safety management of the unit is chaotic, and the crane is moved and modified without authorization
D. Operation errors caused by unlicensed personnel operating the crane
3. [Multiple choice questions] All portable lamps and general lamps with a height of less than 2.5 meters should use () safety voltage if there is no special safety structure or safety measures. （ CD ）
A、54伏
B, 48 volts
C, 42 volts
D, 36 volts
4. [Multiple choice questions] The purpose of the identification of hazards and harmful factors is to identify, identify, analyze and determine the existing dangers, including dangerous and harmful factors (), and provide a basis for accident prevention. （ ABCD ）
A. The location of the presence
B. The way of being
C. The way in which the accident occurred
D. The law of change
5. [Multiple choice questions] In the process of lifting, in the event of danger, the commander should: (). （ AC ）
A. Quickly send out a stop signal
B. Quickly send a downward signal
C. Take immediate measures to eliminate the danger
D. Set up a safety forbidden area
6. [Multiple choice question] If the position of the center of gravity of the object is not considered, it is easy to have the danger of () during the lifting process. （ ABCD ）
A. The object is tilted
B. Sling slippage
C. The wire rope is broken
D. Heavy objects falling
7. [Multiple choice questions] How many methods are commonly used to bind lifting equipment? （ ACD ）
A. Pocket hanging method
B. Hemp rope method
C. Locking method
D. Bundling method
8. [Multiple choice questions] The hoisting capacity of the mobile crane mainly depends on the performance parameters. （ ABC ）
A. Rated lifting capacity
B. Amplitude
C. Lifting height
D. Radius of rotation
9. [Multiple choice questions] The safety problem of working at height is mainly falling, which is divided into (). （ BC ）
A. The hanging object falls
B. Personnel falling
C. Falling objects
D. The hook falls
10. [Multiple choice question] The "Special Equipment Safety Law of the People's Republic of China" stipulates that the user of special equipment shall register with the department responsible for the safety supervision and management of special equipment. () shall be placed in or attached to a conspicuous position of the special equipment. （ C ）
A. Use of certificates
B. Registration certificate number
C. Registration mark
D. Name of the registration authority
11. [Multiple choice question] The "Special Equipment Safety Law of the People's Republic of China" stipulates that the department that organizes the accident investigation shall report the accident investigation report to the people's government at the same level, and report it to the department responsible for () of the people's government at the next higher level for the record. （ C ）
A. Supervision and management of safety production
B. The industry supervisor to which the accident unit belongs
C. Safety supervision and management of special equipment
12. [Multiple choice question] "Safety Regulations for Lifting Machinery Part 1: General Provisions" (GB/T6067.1-2010) stipulates that anyone who boards or leaves lifting machinery must report to the post () and be approved. （ C ）
A. Assign personnel
B. Hoister
C. Lifting driver
D. Command staff
13. [Multiple choice question] If the number of employees exceeds (), an enterprise shall set up a safety production management organization or be equipped with full-time safety production management personnel. （ C ）
A、100人
B. 200 people
C. 300 people
D、400人
14. [Multiple choice question] Where the operation at the height of the fall height datum () m, the operation at a height that may fall is called a high-altitude operation. （ A ）
A. Greater than or equal to 2
B. Greater than or equal to 3
C. Greater than or equal to 4
15. [Multiple Choice] Any substance that can help and support combustion is called (). （ C ）
A. Combustibles
B. Flammables
C. Combustibles
16. [Multiple choice question] The basis for judging the long chain is: (). （ C ）
A. Chain link spacing≥5d
B. The width of the chain link ≥ 3.5d
C. The first two items are available
17. [Multiple choice question] The purpose of formulating crane hoisting command signal standards is to ensure hoisting safety and prevent accidents. （ C ）
A. Improve work efficiency
B. Respond to security inspections
C. Adapt to scientific management
18. [Multiple choice question] Only by striving for technical excellence can we do a good job (). （ C ）
A. Easy to work
B. General work
C. Own work
19. [Multiple choice question] When two cranes are used to lift the same load at the same time, the commander should () to ensure synchronous lifting. （ B ）
A. Command different lifting machinery in flag language and sign language
B. Command each crane with both hands
C. Command each crane separately with both hands
D. Add one person
20. [Multiple choice question] When the end of the wire rope in the figure is fixed with a pressure plate, it is generally not less than (), and the end of the wire rope electric hoist is not less than ()
（ A ）
A, 2, 3
B, 3, 3
C, 2, 4
D. No provisions, no regulations
21. [Multiple choice] The center of gravity of a cylindrical object is on (). （ A ）
A. The center of the middle load surface
B. The end of the central axis
22. [Multiple choice question] The single main girder crane that falls on the side of the main beam should be set up (). （ A ）
A. Anti-tipping safety hook
B. Skew display device
C. Stop gear
23. [Multiple Choice] Add or subtract any equilibrium force system () to any known force system to change the effect of the force system on the rigid body. （ A ）
A. No, it won't
B. Yes
24. [Multiple Choice] The stress generated under the action of bending force is called: (). （ C ）
A. Torsional stress
B. Shear stress
C. Bending stress
25. [Multiple choice question] Oil-containing wire rope can be used under high temperature conditions. （ D ）
A、麻芯
B. Chemical core
C. Mild steel core
D. Asbestos core
26. [Multiple choice question] The safety factor of the white and brown rope of the ground horizontal transportation equipment is not less than (). （ B ）
A、2
B、3
C、4
D、5
27. [Multiple Choice] If there is an electrical fault such as short circuit, overload and lack of phase of the motor, the current will increase sharply, and the temperature will increase sharply from electric energy to (), which will cause a fire. （ A ）
A. Thermal energy
B. Chemical energy
C. Mechanical energy
28. [Multiple Choice] As shown in the figure, what security sign does the icon represent?
（ B ）
A. It is forbidden to use hands
B. Throwing objects is prohibited
C. It is forbidden to put tools
D. Prohibited tools
29. [Multiple Choice] As shown in the figure, what security sign does the icon represent?
（ C ）
A. Beware of falling objects
B. Beware of people
C. Beware of hanging objects
30. [Multiple choice question] In addition to being scientific and authoritative, the emergency plan should also have () ( C )
A. Normative
B. Security
C. Operability
31. [Multiple choice question] Check whether the controllers, contactors, instruments, lighting, and communication equipment are normal, and should be in (). （ B ）
A. Before turning on the power
B. After the power is turned on
C. After turning off the power
32. [Multiple choice question] The three basic requirements for brown rope knotting are (). （ A ）
A. Firm, fast knot, easy to unfasten, reduce damage to the rope
B. Reliable and reduce damage to the rope
C. Firm, fast knot, easy to unfasten, large radius of curvature of the rope buckle
33. [Multiple choice question] The wall thickness of the wheel groove of the pulley is worn to the original wall thickness () and is scrapped. （ C ）
A、10%
B、15%
C、20%
34. [Multiple choice question] The pulley that can save effort in the pulley block is (). （ C ）
A. Fixed pulley
B. a guide pulley
C. Movable pulley
35. [Multiple Choice] The unstable state of an object is also called the critical state, which actually exists for a long time. （ B ）
A. Yes
B, Impossible
36. [Multiple Choice] The steady state of the object is: the gravity force and the supporting reaction force are equal in magnitude and opposite in direction, and the production simulation test is one-point, and the line () is used and passes through the center point of the object's support. （ B ）
A. On the contrary
B. Same
37. [Multiple Choice] The best state for an object to turn over is: (). （ B ）
A. Stable equilibrium state
B. Unstable state
C. Steady state
38. [Multiple choice question] The ultimate working load of the white and brown rope in use should be higher than the breaking tensile force during the test (). （ A ）
A、小
B. Large
39. [Multiple choice question] White and brown rope is a commonly used rope in lifting operations, which has the advantages of softness, easy to carry, easy to bind, etc., and its strength () is easy to wear. （ A ）
A. Relatively low
B. Higher
40. [Multiple choice] When there is a sudden fire, the driver should first pull down the emergency switch, and then pull down the knife switch to cut off the power supply. Then extinguish the fire with dry powder or () fire extinguisher. If the fireworks are too big to extinguish, evacuate in time and call the police immediately. （ C ）
A. Foam
B. Acid and alkali
C. Carbon dioxide
41. [Multiple choice question] When the wire rope sling lifts the weight after binding, the angle between the branches should generally not exceed (). （ A ）
A、90°
B、80°
42. [Multiple choice question] The basic norms of professional ethics mainly refer to dedication, honesty and trustworthiness, fairness, service to the masses and (). （ A ）
A. Dedication to society
B. Respect the old and love the young
C. Care for the collective
D. Learn knowledge
43. [Multiple choice question] The equipment installation diagram mainly represents the equipment installation (), installation (), installation (), and the interconnection with the plant. （ A ）
A. Location, quantity, size
B. Quantity, volume, size
C. Size, location, elevation
D. Weight, number, size
44. [Multiple Choice] The safety voltage in the lifting operation, the following correct options are (). （ D ）
A、1500V380V
B、6000V380V
C、380V220V
D、36V12V
45. [Multiple choice question] Portable work lamp for crane, power supply voltage is not greater than: (). （ C ）
A、220V
B、110V
C、36V
46. [Multiple choice question] The pulley group of the crane should be kept vertical, and its declination angle should not exceed (). （ B ）
A、3°
B、4°
C、5°
47. [Multiple choice question] The safety inspection of crane rigging includes (). （ A ）
A. External inspection and correctness check
B. Performance test and external inspection
C. Verification inspection and performance experiment
D. Model, specification check and use correctness check
48. [Multiple choice question] Crane rigging identification question
（ C ）
A. Short ring
B. Annular shackle
C. Lifting ring
D. Pin shackle
E. Tie the head
F. Straight open shackle
49. [Multiple choice] Overload operation will destroy the () property of the boom crane. （ A ）
A. Stability
B. Firm
50. [Multiple choice question] When the vehicle is loaded, it shall not be mixed. （ A ）
A. People and goods
B. Sundries
51. [Multiple Choice] The "latest analysis" of the ground after the lifting of heavy objects (). （ C ）
A. Can stand under heavy objects
B. You should stand under heavy objects
C. Do not stand under heavy objects
52. [Multiple choice question] In the process of use, if the length of the wire rope is not enough, it can be connected by (). （ B ）
A. Plugging
B. Shackles
53. [Multiple choice questions] The following are flammable media (). （ AC ）
A, ethane;
B. Air;
C. Liquefied petroleum gas
54. [Multiple choice questions] In which of the following working environments, no work is allowed without special supervision: (). （ ABCD ）
A. Flammable
B. Explosive
C. The upper part of the toxic gas plant
D. The top of the tower tank
55. [True or False] 6×37 type wire rope, if there are 20 wire ropes broken in a braided pitch, it can be scrapped. （ √ ）
56. [True or False] GB/T5972-2017 "Maintenance, Maintenance, Inspection and Scrapping of Crane Wire Rope" makes it clear that if the pulley rotates inflexibly or the rolling elements are seriously worn and uneven, the wire rope will be seriously worn. （ √ ）
57. [True or False] The general gesture signal of "work is over" is: both hands are clenched into fists and crossed at the rated glue. （ × ）
58. [True or False] The "Special Equipment Safety Law of the People's Republic of China" was promulgated on June 29, 2013 and came into force on January 1, 2014. （）（ √ ）
59. [True or False] The "Special Equipment Safety Law of the People's Republic of China" requires that all units of special equipment shall regularly calibrate and overhaul the safety accessories and safety protection devices of the special equipment they use, and make records if necessary. （）（ × ）
60. [True or False] The "Special Equipment Safety Law of the People's Republic of China" stipulates that the department responsible for the safety supervision and management of special equipment shall supervise and inspect the production, operation and use of special equipment and inspection and testing institutions in accordance with the provisions of this law. （）（ √ ）
61. [True or False] The "Regulations on the Safety Supervision of Lifting Machinery" was issued on November 27, 2006. The General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China deliberated and passed at the executive meeting, and is hereby promulgated to take effect on June 1, 2007. （ √ ）
62. [True or False] Employees have the right to criticize, inspect, and accuse the problems existing in the work safety of their units, and refuse to command in violation of rules and regulations and force risky operations. （ √ ）
63. [True or False] The environment of the operation site is an important basis for the formulation of the operation plan for the lifting work. （ √ ）
64. [True or False] Any force system where the lines of action are not in the same plane are called plane force systems. （ × ）
65. [True or False] In the command language, the front, back, left, and right are all based on the position of the commander. （）（ × ）
66. [True or False] The effect of force is to change the state of motion of the object or change the shape of the object. （ √ ）
67. [True or False] Force can exist apart from actual objects. （ × ）
68. [True or False] If someone is found to have been electrocuted and the power supply cannot be cut off for some reasons, on the premise of ensuring the safety of the ambulance personnel, appropriate measures should be taken to make the person electrocuted quickly get out of the charged body. （ √ ）
69. [True or False] The danger signal issued by the driver to anyone should be executed. （ √ ）
70. [True or False] The safety factor of the sling, no bending hoisting K=8~10. （ × ）
71. [True or False] The basic method of hoisting goods is: find the center of gravity of the goods, and keep the hook perpendicular to the center of gravity of the goods when the hoisting rope is crooked. （ √ ）
72. [True or False] Under the action of two or more force systems, the object maintains a state of accelerated linear motion, which is called the equilibrium of forces. （ × ）
73. [True or False] In a plane force system or a space force system, the force system in which the lines of action intersect at one point is the converging force system. （ √ ）
74. [True or False] In modern production, most of the processes and processes are inseparable from the lifting and loading and unloading of materials. （）（ √ ）
75. [True or False] When multiple slings are lifted, the slings can be entangled. （ × ）
76. [True or False] The function of the fixed pulley: the weight of the supporting object does not change the direction of the rope or tension. （）（ × ）
77. [True or False] For objects with lifting rings or special lifting points, before hoisting, it is necessary to determine whether it is a part or a whole hoisting. （）（ √ ）
78. [True or False] The force on the guide pulley is related to the angle of the traction rope. （ √ ）
79. [True or False] Gesture signals include general gesture signals, special gesture signals, and other command signals "Safety Production Simulation Examination One Point Pass" number. （ × ）
80. [True or False] The command signals issued by the commander must be clear and accurate. （ √ ）
81. [True or False] When the commander sends out the hook or load descent signal, he should have measures to protect the safety of the person and equipment at the place where the load is landed. （ √ ）
82. [True or False] Commanders are responsible for taking necessary precautions against possible situations. （ √ ）
83. [True or False] The vertical oblique hoisting and binding method of cylindrical objects is mostly used in the occasions when the external dimensions of the objects are short and there are no special requirements for the installation of the objects. （ × ）
84. [True or False] According to statistics, most of the causes of lifting machinery safety accidents are caused by the illegal operation of crane drivers. （）（ √ ）
85. [True or False] All visible parts of any wire rope should be observed as much as possible every working day ( √ )
86. [True or False] There are three ways for poisons to invade the human body: respiratory system, skin absorption, and digestive system. （）（ √ ）
87. [True or False] The efficiency of the pulley block increases with the increase of the number of ropes. （ × ）
88. [True or False] Objects should be deformed after being subjected to force, and there are six basic forms of deformation. （）（ × ）
89. [True or False] Before loading the object, all tools, spreaders, and machinery should be inspected and used only after confirming that they are safe, and sufficient auxiliary items such as skids, braces, old sacks or rubber pads should be prepared. （ √ ）
90. [True or False] The resultant force of two or more forces of an object is the sum of the values of these forces. （ × ）
91. [True or False] The position of the rope of the traction equipment should not be too high, in order to avoid dumping when handling larger equipment, the towing rope can be appropriately used to increase the stability of the equipment. （ √ ）
92. [True or False] The catalogue of special labor protection articles shall be determined and published by the State Administration of Work Safety. （）（ √ ）
93. [True or False] When transporting equipment with rollers, the tension is only related to the weight of the equipment, and has nothing to do with the number of rollers placed under the row. （ × ）
94. [True or False] To install a set of wire rope rope cards, at least 2 rope cards should be used. （）（ × ）
95. [True or False] In the lifting operation, 6×37 and 6×19 wire ropes are commonly used. （）（ × ）
96. [True or False] The selection of lifting and lifting points does not have to consider the shape, volume and structure of the object. （ × ）
97. [True or False] The crane brake wheel shall not have cracks. （ √ ）
98. [True or False] The fire extinguisher used in the crane driver's room should be a foam fire extinguisher. （ × ）
99. [True or False] Lifting machinery must be operated and used within the range specified in the rated load. （ √ ）
100. [True or False] When the crane lifts the heavy object, due to the force on the heavy object, the heavy object moves from stationary to moving, from low displacement to high position, and the position changes. （ √ ）
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