Source of question bank: Safety production mock examination, WeChat public account mini program
2021 A certificate (security officer) exam and A certificate (security officer) mock exam question bank, including A certificate (security officer) exam answers and analysis and A certificate (security officer) mock exam question bank exercises. Combining the latest syllabus of the national A certificate (safety officer) exam and a summary of the real questions of the A certificate (safety officer) exam from the safety production simulation test, Yidiantong official account, will help practice before the A certificate (safety officer) theoretical exam.
1. [Single-choice question] When the steel cantilever beam and the building structure are connected and fixed by bolted steel plate, the size of the steel plate should not be less than (). (A)
A、100mm×10mm
B、200mm×10mm
C、100mm×20mm
D、200mm×20mm
2. [Single-choice question] A piece () must be installed at the main node of the outer scaffold, which is used to buckle and it is strictly prohibited to remove it. (A)
A. Horizontal horizontal rod; right-angle fasteners
B. Horizontal horizontal rod; butt fastener
C. Longitudinal horizontal rod; direct fastener
D. Longitudinal horizontal rod; butt fastener
3. [Single-choice question] The most important parameter of tower crane working capacity is (). (C)
A. Maximum height
B. Arm length
C. Rated lifting moment
D. Lifting weight
4. [Single-choice questions] The main components and safety devices of the tower crane should be checked regularly, and there should be no less than once every (), and there should be records; when the service period exceeds (), a comprehensive inspection should be carried out, and only after passing continue to use. (B)
A, week, month
B, month, year
C, quarter, year
D, 6 months, one year
5. [Single-choice question] When the temperature is below -10℃, the lifting capacity shall not exceed the rated lifting value (), in other cases, the rated lifting value shall not be exceeded. (C)
A、30%
B、40%
C、50%
D、60%
6. [Single-choice question] The length of the ends of various rods extending from the edge of the fastener cover should be (). (A)
A、100mm
B、80mm
C、50mm
D、200mm
7. [Single-choice question] The combustion performance of office building components should not be lower than (), and the combustion performance of dormitory building components should not be lower than () (A)
A、B2,B1
B、B1,B2
C、B1,B1
D、B2,B2
8. [Single choice] The distance between the distribution box and the switch box should not exceed ()m, and the distance between the switch box and the electrical equipment should not exceed ()m( ). (D)
A、15、3
B、15、10
C、15、30
D、30、3
9. [Single choice] Regarding the installation and disassembly of construction hoisting machinery, the following statement is wrong: (). (C)
A. For the installation and disassembly of construction hoisting machinery and overall lifting scaffolding, formwork and other self-elevating erection facilities, disassembly and assembly plans and safety construction measures should be formulated
B. The installation and disassembly of construction hoisting machinery and overall lifting scaffolding, formwork and other self-elevating erection facilities shall be supervised by professional and technical personnel on site
C. After the installation of construction hoisting machinery and self-elevating erection facilities such as overall lifting scaffolding and formwork is completed, the general contractor shall self-inspect, issue a self-inspection qualification certificate, and provide safety instructions to the construction unit, go through the acceptance procedures and sign
D. Special operation personnel such as vertical transport machinery operators, installation and disassembly workers, blasting operators, lifting signal workers, ascending and erecting operators, etc., must undergo special safety operation training in accordance with relevant national regulations and obtain special operation qualification certificates. , Before starting work
10. [Single-choice questions] When working (), wrap the welding wire around the body or put it on the back. (D)
A. No
B. Yes
C, general
D. Forbidden
11. [Single-choice question] In the following cases, the pulley should be scrapped (). (A)
A. Cracks or rim damage
B. The wear of the wall thickness of the pulley rope groove reaches 10% of the original wall thickness
C. The amount of wear at the bottom of the pulley groove exceeds 20% of the corresponding wire rope diameter
D. The wall thickness of the pulley rope groove wears up to 15% of the original wall thickness
12. [Single-choice question] Temporary fire-fighting facilities should be set up simultaneously with the construction of the project under construction. In housing construction projects, the gap between the provision of temporary fire protection facilities and the construction progress of the main structure of the project under construction should not exceed () floor. (B)
A、1
B、3
C、5
D、10
13. [Single-choice question] Before the construction of the construction project, the technical personnel of the construction unit responsible for project management shall give () a detailed explanation of the technical requirements for safe construction, and both parties shall sign for confirmation. (C)
A. Project leader
B. Safety officer of construction unit
C. Operation team
D. On-site security officer
14. [Single-choice questions] () If the number of casualties caused by the accident changes within 30 days from the date of the accident, it should be reported in time. (C)
A. Road traffic accidents
B. Fire accident
C. Construction accidents
D. All accidents
15. [Single-choice questions] () is the main object and important resource of management activities. (C)
A. Things
B. Material
C. People
D. Machine
16. [Single-choice questions] () is the most basic safety production management system for construction enterprises. (A)
A. Safety production responsibility system
B. Safety inspection system
C. Security technical disclosure system
D. Safety education system
17. [Single-choice question] Which three levels are the three-level safety education ()? (B)
A. Legal representative of the enterprise, project leader, team leader
B, company, project, team
C. General contractor, subcontractor, engineering project
D. Subcontractors, engineering projects, teams
18. [Single-choice questions] Double-row scaffolds with a height of () and above should be provided with continuous scaffolding (C) on the outer full elevation
A、15m
B、20m
C、24m
D 、 30m
19. [Single-choice question] Reliable anti-skid, cold-proof and () measures must be taken when working at high places in rainy and snowy days. (D)
A. Anti-frost
B. Waterproof
C, anti-fog
D. Antifreeze
20. [Single choice] The working platform of the steel bar cutting machine should compare with the lower position of the cutter () (C)
A, high
B, low
C. Level
D. Basic level
21. [Single-choice question] The safety factor of the steel wire rope is () (A)
A. Ratio of wire rope breaking force to allowable force
B. The ratio of the allowable pulling force of the wire rope to the breaking force
C. The ratio of the breaking force of the steel wire to the allowable force
D. Judging by experience
22. [Single-choice question] When multiple jacks are used for joint lifting, the same type of jack should be used, and the rated lifting weight of each should not be less than () times the weight of the component. (B)
A、1.0
B、1.2
C、1.5
D、2.0
23. [Single-choice question] When double cranes are used for lifting, cranes of the same type or similar performance should be used. Load distribution should be reasonable, and the load of a single crane should not exceed ()% of the rated lifting capacity. (C)
A、60
B、70
C、80
D、90
24. [Single choice] The lightning protection grounding resistance shall not be greater than ()Ω. (C)
A、4
B、5
C、10
D、20
25. [Single-choice question] For tower cranes exceeding () height, red obstruction indicator lights must be installed on the highest part of the crane (the boom, tower cap or top of the chevron), and the power supply is not affected by shutdown. (B)
A、20m
B、30m
C、40m
D、50m
26. [Single-choice questions] If the special plan of sub-projects that is more dangerous than a certain scale needs to be significantly revised after verification, the construction unit shall revise it in accordance with the verification report and () experts conduct the verification. (B)
A. Confirmation
B. Reorganization
C. No need
D. Give up
27. [Single-choice question] When the crane is operating near the overhead cable line, the minimum distance between the boom, spreader, auxiliary equipment, steel wire rope, cable wind rope and load, etc., and the 35KV transmission line () (B)
A、1
B、4
C、7
D、11
28. [Single-choice question] When the crane is operating close to the overhead cable line, the minimum distance between the boom, spreader, auxiliary equipment, steel wire rope, cable wind rope and load, etc., and the 220KV transmission line () (B)
A、1
B、6
C、12
D、18
29. [Single-choice questions] The principle of () should be followed when signing and changing labor contracts. (D)
A. People-oriented, seeking truth from facts
B. Fairness and justice
C. Seeking truth from facts, scientifically rigorous
D, equality, voluntary, consensus
30. [Single-choice question] If the employee or his close relatives think it is a work-related injury, and the employer does not think it is a work-related injury, () shall bear the burden of proof. (A)
A. Employer
B. Staff
C. Government
D. Close relatives
31. [Single-choice question] The area of the mobile operating platform should not exceed 10m², the height should not exceed 5m, the aspect ratio should not exceed (), and the construction load should not exceed 1.5kN/m². (B)
A、1:1
B、3:1
C、5:1
D、10:1
32. [Single-choice question] The wall frame attached to the material hoist can be connected to the frame body and the building by (). (D)
A, wood pole
B. Bamboo pole
C. Wire rope
D, steel pipe
33. [Single-choice question] C20 concrete is poured on the foundation of the material hoist, and the thickness shall not be less than () (D)
A、150mm
B、200mm
C、250mm
D、300mm
34. [Single-choice question] The wall thickness of the pulley rope groove () with the original wall thickness should be scrapped. (D)
A、50%
B、40%
C、30%
D、20%
35. [Single-choice question] After the pile foundation operation is over, the pile hammer should be dropped, cut off () and the circuit switch, and people can leave after stopping the brake. (A)
A. Power
B. Water source
C. Air source
D. Oil circuit
36. [Single-choice question] According to regulations, when the amount of wear or corrosion on the surface of the wire rope reaches (), it should be scrapped. (D)
A、0.07
B、0.1
C、0.2
D、0.4
37. [Single-choice question] The accidental injury insurance premiums for workers engaged in dangerous operations at the construction site shall be paid by (). (B)
A. Construction unit
B. Construction unit
C. Subcontractor
D. Individual
38. [Single-choice questions] The construction unit shall conduct () safety production education and training at least once a year, and its education and training shall be recorded in the personal work file. (D)
A. Operator
B. Management staff
C. Security guards
D. Managers and operators
39. [Single-choice question] A construction elevator is a machine that uses a work cage (hanging cage) to move vertically (or tilt) along () to transport people and materials. (B)
A. Standard section
B. Rail frame
C. Catheter
D. Channel
40. [Single-choice questions] The height of the operating platform should not exceed 5m, and a stable check should be carried out, and measures should be taken to reduce the uprights () (B)
A, aspect ratio
B. Slenderness ratio
C. The area of the operating platform
D, pole spacing
41. [Single-choice question] When the excavator is operating, () shall not stay within the bucket turning radius. (A)
A. Anyone
B. Non-staff
C. Engineering and technical personnel
D. Onlookers
42. [Single-choice question] According to regulations, the excavation depth of foundation pits exceeds (), and the earthwork excavation works of the trenches shall prepare a special construction plan. (C)
A, 3 meters (including 3 meters)
B, 5 meters
C, 5 meters (including 5 meters)
D, 8 meters
43. [Single-choice questions] The overhanging length of the overhanging operating platform should not be greater than ()m, and the bearing capacity needs to be designed and checked. (C)
A、1
B、2
C、5
D、10
44. [Multiple choice questions] The hooks and rings used in lifting operations must have a smooth surface without defects such as (). (ABC)
A, peeling
B. Notch
C, acute angle
D, wear
45. [Multiple-choice questions] Which of the following labor protection equipment must be worn by lifting workers during work at heights (). (AB)
A. Seat belt
B. Safety helmet
C. Insulating gloves
D. Anti-static clothing
46. [Multiple choice questions] Practitioners of production and business units have the right to know the existence of their workplaces and jobs (). (AD)
A. Risk factors
B. Risk
C. Features
D. Preventive measures
47. [Multiple Choice Questions] The material hoist must stop running in bad weather such as (). (ABD)
A, heavy rain
B, heavy fog
C, snow
D. The wind speed is 13m/s and above
48. [Multiple Choice Questions] The structure and installation of beam or truss support should meet the following requirements (). (ABCD)
A. When using a telescopic truss, the lap length shall not be less than 500mm, and the specification and quantity of the upper and lower chord connecting pins shall be in accordance with the design regulations, and no less than 2 U-shaped cards or steel pins shall be used for tightening, 2 U-shaped cards Pitch or pin pitch shall not be less than 400mm
B. The spacing setting of the installed beam or truss bracket should be consistent with the template design drawing
C. The building structure supporting beam or truss supports should have sufficient strength, otherwise, additional column supports should be set up
D. If the truss is arranged in multiple groups, horizontal bracing must be added at the lower chord corner
49. [Multiple choice questions] What are the "three treasures" usually referred to in building construction? (ADE)
A. Seat belt
B. Safety lock
C. Safety shoes
D. Safety net
E. Safety helmet
50. [Multiple Choice Questions] If the Work Safety Law stipulates that the work safety management personnel of the production and business unit have () one of the behaviors, they shall be ordered to make corrections within a time limit; if a work safety accident occurs, their qualifications related to work safety shall be suspended or revoked; composition Whoever commits a crime shall be investigated for criminal responsibility in accordance with the relevant provisions of the Criminal Law. (ABE)
A. Failure to organize or participate in the formulation of safety production rules and regulations, operating procedures and emergency rescue plans for production safety accidents of the unit
B. Organize or participate in the work safety education and training of the unit, and truthfully record the work safety education and training
C. The safety equipment has not been regularly maintained, maintained and regularly tested
D. Use techniques and equipment that should be eliminated that endanger production safety
E. Supervise and urge the implementation of safety management measures for major hazards of the unit
The above is the 2021 A certificate (security officer) exam and A certificate (security officer) mock exam question bank. Supports accurate test questions for A-certificate examinations in all regions of the country, and supports exercises in question banks such as safety qualification certificates, special operation certificates, and vocational skills identification.