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單項選擇題

The heart of the diesel engine is the （） where the fuel is burnt and the power developed.

A.crankcase
B.cylinder
C.scavenge box
D.piston

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單項選擇題

The hand steering is a method by which the motion of the rudder is controlled with （）.

A.a motor-driven steering wheel
B.a pneumatic steering wheel
C.a hand-driven steering wheel
D.an electric steering wheel

單項選擇題

The gudgeon pin is carried in （） in the piston skirt.

A.the bearing
B.the crosshead
C.bosses
D.bridges