题目内容

Flywheel______ tends to keep it rotating at a constant speed.

A. inertia
B. quality
C. movement
D. weight

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The water ______ is driven by the fan belt from the crankshaft pulley.

A. filter
B. fan
C. port
D. pump

The cylinder ______ is the largest part of the engine.

A. block
B. head
C. valve
D. port

In some engines,the cylinder block also carries the ______ .

A. camshaft
B. crankshaft
C. shaft
D. countershaft

The cylinders and pistons are in the upper of the cylinder block and the______ is in the lower part.

A. crankshaft
B. camshaft
C. countershaft
D. shaft