After finished the engine, which of valves cannot be shut off by the duty engineer?（）

单项选择题After received the “finished with engine” instruction, which of the following operations is false?（）

A.shut off the starting air receiver outlet valve
B.stop the FO priming transfer pump and shut off the correspondence inlet and outlet valve
C.stop the SW pump immediately and shut off the correspondence inlet and outlet valve
D.stop the FW pump immediately and shut off the correspondence inlet and outlet valve

单项选择题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

单项选择题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

单项选择题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

单项选择题The normal color of the exhaust gas of the diesel will be （）

A.achromatism or thin gray
B.thin white
C.sky-blue
D.black