單項(xiàng)選擇題

Which of the following item is the cause to the damage of parts and excess wearing?（）

A.overload
B.the odds of the load
C.the default of parts
D.overload and the odds of the load

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The main purpose of inspection for a running diesel engine is（）

A.testing for the mechanical load and the thermal load
B.inspecting thermal and mechanical condition of the engine
C.inspecting each system and exhaust temperature
D.testing for compress pressure and explosion pressure

單項(xiàng)選擇題

During the diesel engine running, the water level of FW expansion tank should normally kept in the （） level of glass tube.

A.the highest
B.above 3/4
C.1/2-3/4
D.the lowest