中级汽车修理工试题(含答案)（Intermediate mechanic test questions (including answers)）.doc

中级汽车修理工试题5(含答案)（Intermediate mechanic test questions 5 (including answers)） National vocational qualification examination - intermediate auto mechanics simulation exam 5 The red answer is the correct answer, 1. The size of the distance between the two adjacent lines of the measuring instrument (such as the percentage table) will affect the estimated reading (). precision 2. The fatigue of parts results in the change of its performance. mechanics 3. Bearing roller () is caused by fatigue wear on the surface. pitting 4. When the shaft parts are tired, the parts () will be caused seriously. The fracture 5. In order to improve the surface hardness of the parts, the surface of the parts can be heat treated, and the following is not the heat treatment technology (). Shot blast Steel can be changed by heat treatment. Mechanical properties of Fatigue refers to the sudden breaking of metal parts under the action of the metal parts. Cyclic loading 8. Heat treatment can change the performance of steel inside (). The structure of the organization When the engine is working, the oil is under the action of the oil pump, and the filter is driven out by the suction pump, and most of the oil is () to the main oil channel. strainer The gasoline engine consists of crank connecting rod mechanism, gas distribution mechanism, fuel supply system, ignition system, cooling system, lubricating system and (). Start the system The normal oil consumption of the engine is approximately () liters / 100 km. 0.1 ~ 0.5 12. To ensure that the engine works under normal temperature, the components of good dynamic and economic performance are (). The cooling system 13. The component that passes the heat from the engine water jacket to the air is (). The radiator 14. If the ignition system fails to ignite, the ECU will (). Stop fuel injection 15. The part that controls the flow direction and flow through the radiator is (). thermostat 16. The installation of the engines thermostat is in (). The cylinder