20 14 theoretical examination questions and answers for senior automobile driving engineers

20 14 examination question bank for automobile drivers in public institutions to be promoted to junior, intermediate and senior technicians.

First, the single choice:

1.& gt(b) The shift quality of automatic transmission deteriorates.

A, the throttle cable length changes b, the oil pressure is too low or too high c, the engine idle speed is too high d, and the one-way clutch is damaged 2. & gt the following is (d) which does not belong to the oil leakage position. A crankshaft front oil seal b, crankshaft rear oil seal c, camshaft rear oil seal d and valve oil seal.

3.& gt For vehicles running on ordinary roads, when the tread depth is less than (c) mm, the tires should be replaced. A、 1.0 B、 1.3 C、 1.6 D、2.0

4.& gt Before entering the muddy section, install the snow chains in (c) to increase the traffic capacity of vehicles. A. front wheel b, rear wheel c, driving wheel d and driven wheel 5. >; The symbol of the international system of units is (C). A, [kg] B, [mm] C, [silicon] D, [cadmium] 6. The brands of> engine oils are classified according to (A) 100 c. A, kinematic viscosity b and freezing point.

C, octane number d, oxidation stability

7. When the 7.& gt engine is working, if (a) remains unchanged, the relationship between its economic index and (a) is called load characteristic. A, speed load b, load speed c, speed load d, load speed 8. >; The higher the brand of gasoline, the higher the octane number (A).

A, the higher B, the lower C, constant D, sometimes high, sometimes low.

9.& gt Why the automatic transmission can't be put into gear. A thinks: inappropriate transmission oil level is one of them. B thinks it is caused by the failure of the brake band or clutch. C thinks that the damage of one-way clutch is one of them. The correct view is (c).

A, A, B, B, C, C and D are all 10. & gt under certain road and load conditions, (d) the fuel consumption of automobiles in operation is called average fuel consumption. A, low speed b, high speed c, medium speed d, stable 1 1. & gt the combustible mixture is (a).

a、α& lt； 1 B、α= 1 C、α& gt； 1 D、α& gt； 1.1312.> The following are not the reasons why (d) the transmission is difficult to shift gears.

A, improper adjustment or damage of gear lever b, deformation of shifting fork shaft c, bending deformation or damage of transmission shaft d, failure of interlock device 13. & gt The quality of vehicle equipment includes the quality of engine, chassis, body and all electrical equipment; (b) And: Quality of vehicle tools, spare wheels and other spare parts. First, the car loading quality

B, auxiliary equipment quality and the quality of lubricating oil, fuel oil and coolant required for normal running of the vehicle C, total quality D and vehicle self-weight.

14.& gt The essence of morality is that morality is different from other things (A). A, fundamental nature b, surface phenomenon c, potential phenomenon d, special phenomenon

15.& gt The condition for a rear-wheel drive vehicle to roll over is (a).

/link? URL = n8ny 14J _ 0u is _ bKjNUdQH-fkgwtbifbo 6 owyccrffnlmyyx 497 tqlurn-v 628 CTX k5q 7 rkem 9 if 1 D8 dezghul 16 jzbxo 0 sqd 0 rk ntst 2 IRA