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單項選擇題

On top of scavenging air box is mounted a strong cast iron frame for each cylinder known as（）

A.cooling jacket
B.cylinder liner
C.piston crown
D.cylinder cover

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單項選擇題

On the top of the cylinder is mounted the cylinder cover which is pressed onto （） of the cylinder liner by means of nuts and studs.

A.the camshaft
B.the flange
C.the ridge
D.the bulge

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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