题目内容

The intake _____carries the air-fuel mixture into the engine.

A. manifold
B. port
C. hose
D. pipe

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The_____removes particles of carbon or other foreign material from the oil.

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

The fan_____the engine provides a flow of air.

A. at the front of
B. at the rear of
C. at the bottom of
D. at the top of

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A. coolant
B. radiator
C. thermostat
D. antifreeze

The piston _____connects the piston to the connecting rod.

A. rod
B. pin
C. flange
D. body