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單項選擇題

The ignition of the fuel in diesel engine is caused by the （） of compression of the air previously admitted into the cylinders.

A.vacuum pressure
B.specific gravity
C.heat
D.viscosity

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單項選擇題

The hydraulic （） is used to control engine speed.

A.motor
B.pump
C.governor
D.capstan

單項選擇題

The hot expanding gas rotates the blades of the exhaust turbine, thus giving out large part of its power, which drives （）.

A.the oil separator
B.the fresh water generator
C.the compressor
D.fire pump