题目内容

The connecting rod is attached to the piston by the _______

A. piston rod
B. piston pin
C. cap bolts
D. cap bearing

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The bottom ring prevents excessive oil from entering the combustion chamber from the______ .

A. oil pan
B. crankcase
C. fuel tank
D. water pump

The flywheel is bolted to the _____on the rear end of the crankshaft.

A. tail
B. central
C. flange
D. top

In the standard engine, each cylinder has ______.

A. four valves
B. two valves
C. one valve
D. three valves

Spark plug provides the spark which ignites the _______.

A. fuel
B. oil
C. air-fuel mixture
D. combustion gases

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