中级汽车修理工试题(含答案)（Intermediate auto repair question (including answer)）.docVIP

中级汽车修理工试题2(含答案)（Intermediate auto repair question 2 (including answer)） National vocational qualification examination - Intermediate automobile repairman simulated test questions 2 The red answer represents the correct reference answer, 1. The quality of carbon structural steel is expressed by two digits, which means the average carbon content of steel. A few tens of thousands 2, the following materials, belongs to the quality of carbon structural steel is (). Forty 3, in the following materials, used to make the engine crankshaft is (). Forty-five 4, T8A belongs to (). Carbon tool steel 5, the engine lubricating oil viscosity is too large, will cause (). Engine cold start difficult 6, 40Cr is a kind of quenched and tempered steel, used to make pump shaft, in order to obtain good comprehensive mechanical properties, its final heat treatment method is (). Quenching + high temperature tempering 7. Compared with steel, the outstanding characteristic of cast iron is (). Good casting ability 8, () function is to push the thrust of the camshaft to the push rod. Tappet 9. The combustible gas mixture forming device of gasoline engine is (). Carburetor 10. Idle jet orifice of carburetor in throttle valve (). Below 11, () the function is used to support and close the valve and make the valve close close, to prevent the valve bounce and make the cylinder leak. Valve spring 12, the following options, () belongs to the engine of the air supply device. Air filter 13. The function of the push rod is to transfer the thrust from the camshaft through the tappet to (). rocker arm 14, () the function is to ensure that the engine in idle or very small load conditions to provide less dense mixture. Idling device 15, within the scope of (). 15. When the engine starts cold, it supplies extremely dense mixture, which requires excessive air coefficient 0.2 - 0.6 16. () suck the gasoline out of the tank and put it into the carburetors float chamber. Gasoline pump 17. The mixing device of dies