Source of question bank: Safety production mock exam, WeChat public account mini program
The 2021 car driver (technician) examination and car driver (technician) examination materials, including car driver (technician) examination answers and analysis, and car driver (technician) examination data exercises. Combining the latest syllabus of the national car driver (technician) exam and the summary of the real questions of the car driver (technician) exam from the safety production simulation test, Yidiantong public number, will help the car driver (technician) practice before the test.
1. [True and True] () The gap between the piston and the cylinder causes black smoke from the exhaust pipe. (√)
2. [True and True] () The free stroke of the steering wheel refers to the amount of free rotation of the steering wheel when the car is kept in a straight line. (√)
3. [True and True] () Short circuit of the ignition coil will cause excessive engine fuel consumption. (√)
4. [True and True] () For vehicles with ABS system, do not repeatedly step on the brake pedal during emergency braking. ABS does not require human intervention and the braking effect is good. (√)
5. [True and True] () The airbag must have a strong anti-interference ability. (√)
6. [True and True] GPS is a device used to determine the exact position of a car on the earth. (√)
7. [True and True] () If a motor vehicle is running on an expressway, if it breaks down, stop immediately and repair it as soon as possible. (×)
8. [True and True] () The so-called car breakdown refers to the phenomenon that the car completely loses its ability to work, including the car's inability to drive, abnormal functions, poor performance, etc. (×)
9. [Judgement Question] () Vehicle maintenance should implement the principle of "prevention first, maintenance based on conditions". (×)
10. [True and True] () The car cruise control device can keep the car at a steady speed. (√)
11. [True and True] () Once there is a problem with the front wheel alignment, it will cause abnormal wear of the front wheel. (√)
12. [True and True] () There are two methods for measuring the offset of the optical axis: the projection screen scale detection method and the optical axis dial type detection method. (√)
13. [True and True] () The higher the vehicle speed, the greater the air resistance and the lower the driving resistance of the car. (×)
14. [True and True] Illuminance is the degree to which non-luminous objects are illuminated by the light source, and is a physical quantity that represents the brightness of the light-receiving surface. (√)
15. [True/True Question] Fire extinguishers are mainly used to fight the first fire and are standing fire extinguishing equipment. (√)
16. [True/True Question] () Automatically geared cars coasting in neutral gear are more fuel-efficient. (×)
17. [True and True] The main factor affecting CO production is the total combustible mixture. (×)
18. [True/Judgement] The prescribed mileage of the car during the traveling period is usually 2000-3000km. (×)
19. [True and True] The traction control device is also called the driving force anti-skid device. (√)
20. [True and True] () Crankcase forced ventilation can make H(×)
21. [Single choice] The instrument for measuring cylinder pressure is (). (B)
A. Vacuum gauge
B. Cylinder pressure gauge
C. Cylinder gauge
D. Dial indicator
22. [Single-choice question] Use low-grade gasoline instead of high-grade gasoline, and proper () ignition advance angle should be used to avoid deflagration. (C)
A. Postpone
B, in advance
C, increase
D, reduce
23. [Single-choice question] The performance of a car () directly affects driving safety, and is also related to the effective display of car power. (C)
A. Economical
B. Operational stability
C. Braking
D. Passability
24. [Single-choice question] According to the different steering energy, the automobile steering system is divided into mechanical steering and (). (C)
A. Solar
B. Hydraulic energy
C. Power steering
D. Help
25. [Single-choice question] The anti-knock performance of gasoline is represented by the value (). (A)
A, octane number
B. Temperature
C, cetane number
D, flash point
26. [Single-choice question] Side slip is a phenomenon in which a car exceeds the ground adhesion during a turn, causing the car to lose control. (C)
A. Braking force
B. Inertial force
C. Centrifugal force
D, driving force
27. [Single-choice question] Abnormal wear and tear of automobile tires is one of the contents of () detection. (A)
A. Appearance
28. [Single-choice question] The function of the anti-lock braking system is to ensure that when the car brakes on any road, it automatically controls and adjusts the wheel braking force to prevent the wheel () to obtain the best braking effect. (A)
A, completely locked
B. Deviation
C, sideslip
D, rolling
29. [Single-choice question] () is an inspection to determine the technical condition of the vehicle, the purpose is to judge the technical condition of the vehicle being inspected. (A)
A, car inspection
30. [Single choice] The electronic control fuel injection device is based on () as the control center. (C)
A. Sensor
B. Injector
C. Electronic control unit
D. Fuel pump
31. [Single-choice question] Commonly used quick measurement methods for exhaust particles of diesel engines include Bosch smoke meter method and (). (A)
A. Smoke transmission method
32. [Single-choice question] Global Positioning System can be represented by the English abbreviation (). (C)
A、GBS
B 、 GSP
C 、 GPS
D、CCS
33. [Single-choice question] The function of the car's anti-lock brake device is to ensure that when the car is braking on any road, it can automatically control and adjust () to prevent the wheels from locking up completely, so as to obtain the best braking effect. (A)
A. Wheel braking force
B. Braking distance
C. Braking time
D. Braking deceleration
34. [Single-choice question] The function of the wheel speed sensor is to detect the wheel speed and convert it into an electrical signal to send to (). (A)
A、ECU
B 、 CEU
100, UEC
D EUC
35. [Single-choice questions] The car cruise control device is an automatic driving device that keeps the car speed within the range of the engine speed. (A)
A, constant
36. [Single choice] When the engine is overhauled, the () must be inspected with a knife-edge ruler. (C)
A. Valve seat
B. Cylinder bore
C. Cylinder head plane
D. The rear end of the cylinder
37. [Single-choice questions] The types of air flow meters include wing plate, measuring core, hot wire, thermal mode, and (). (A)
A. Eddy current
38. [Single choice] When replacing tires, retreaded tires are not allowed to be used as (). (A)
A, steering wheel
39. [Single-choice questions] Automobile braking devices all use mechanical friction to achieve braking operations. The part that directly generates frictional torque to slow down and stop the wheels is called (). (D)
A. Brake shoes
B. Brake drum
C. Friction plate
D. Brake
40. [Single-choice question] Automobile exhaust emissions are related to () type and working conditions. (D)
A. Fuel
B. Ignition
C, oxygen sensor
D. Engine
41. [Single-choice question] The function of the shock absorber is to use () to accelerate the attenuation of the vibration of the car body to improve the driving comfort of the car. (B)
A. Damping spring
B. Resistance of liquid flow
C. Coolant
D. Leaf spring
42. [Single-choice question] Liberation CA1092 secondary maintenance cycle plain is () km. (A)
A、14000±1000
B、12000±1000
C、16000±1000
D、10000±1000
43. [Single-choice question] The fuel system of an electronically controlled engine is composed of a fuel tank, an electric gasoline pump, a gasoline filter, a pressure buffer, and (). (B)
A. Air flow meter
B. Pressure regulator
C. Water temperature regulator
D. Water temperature sensor
44. [Single-choice question] The visual diagnosis is the use of visual inspection when the ABS system fails. The content includes: check whether the ECU connection line is good, whether the wheel pressure is within the specified range, () and whether the battery voltage is within the specified range. (D)
A. Whether the vehicle speed is within the specified range
B. Is the car in good condition
C. Whether the braking is good
D. Whether the brake fluid level is within the specified range
45. [Single-choice question] The maximum power of a car engine determines the car's (). (C)
A. Maximum climbing ability
B. Traction ability
C. Maximum speed
D. Acceleration ability
46. [Single-choice question] The purpose of designing the airbag system is to quickly lay an airbag between the driver, occupants and the interior components of the car during the collision. (A)
A、60ms
B、30ms
C、20ms
D、10ms
47. [Single-choice question] The front wheel positioning angle includes four factors: (), kingpin caster angle, front wheel camber angle and front wheel toe. (A)
A. King pin inclination
B. Front wheel inclination
C. Rear inclination of front wheels
D, the kingpin forward angle
48. [Single-choice question] The stabilization effect of the car's steering wheel is realized by the () of the steering wheel. (B)
A. Speed of steering wheel rotation
B. Positioning angle
C. Tyre model
D, tire pressure
49. [Single-choice question] Automobile exhaust emissions are related to () type and working conditions. (D)
A. Fuel
B. Ignition
C, oxygen sensor
D. Engine
50. [Single-choice question] The function of the anti-lock braking system is to ensure that when the car makes emergency braking on any road, it automatically controls and adjusts the wheel braking force to prevent the wheel () to obtain the best braking effect. (A)
A, completely locked
B. Deviation
C, sideslip
D, rolling
The above is the 2021 car driver (technician) examination and car driver (technician) examination data. Support test questions for accurate car drivers (technicians) in all regions of the country, support safety qualification certificates, special operation certificates, vocational skills appraisal and other job types of exercises.