單項(xiàng)選擇題

What is the function of an engine’s stationary parts?（）

A.To add power to the engine
B.To keep the engine firmly attached to its supporting base
C.To keep moving engine part in their proper relative positions
D.To rotate the crankshaft

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單項(xiàng)選擇題

An overcorrecting and unstable engine governor operation is known as（）.

A.droop
B.dead banding
C.dash potting
D.hunting

單項(xiàng)選擇題

Coolant can be lost from a diesel engine jacket cooling waster system by leakage from（）

A.cylinder head cracks
B.piping joints
C.pump leaking
D.all of the above