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單項選擇題

On opposite ends of a single shaft of a turboblower are a gas driven （）and a air compressor, which are sealed each other.

A.charge air receiver
B.scavenging air belt
C.turbine
D.air cooler

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單項選擇題

On a four-stroke diesel engine, when the piston is driven downwards by the expanding gas, it delivers power to the crankshaft through the （）.

A.thrust block
B.sounding rod
C.connecting rod
D.push rod

單項選擇題

On a diesel engine, fuel is delivered into the combustion space by （）.

A.a cooling system
B.a lubrication oil system
C.an electric system
D.an injection system