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單項(xiàng)選擇題

The term medium speed diesel engine is currently taken to mean an engine with an operating rotational speed of （） rpm.

A.below 300
B.above 1200
C.between 300 to 1200
D.below 1200

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單項(xiàng)選擇題

The term （） refers to one complete sequence of operations required to produce power in an engine.

A.diesel engine
B.stroke
C.cycle
D.compression ratio

單項(xiàng)選擇題

The supercharger takes air out of the surrounding atmosphere and then feeds it to the engine’s （）.

A.inlet valves
B.exhaust valves
C.emergency valves
D.run-return valves

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