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單項(xiàng)選擇題

As for a diesel engine, lack of combustion air may be due to （）.

A.fouling turbine
B.fuel pump faults
C.lubrication failure
D.excessive cooling

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單項(xiàng)選擇題

As a heat engine,（） energy is the source of power by which the diesel engine can be operated.

A.electric
B.heat
C.mechanical
D.exhaust

單項(xiàng)選擇題

An overspeed safety device is usually fitted to a generator engine for （） in the event of overspeed.

A.cutting power off the engine
B.increasing the fuel pump setting
C.braking the crankshaft
D.stabilizing the ship speed

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