单选题The pump has a constant stroke and the amount of fuel delivered is regulated by rotating () which has a specially arranged helical groove cut into it.Athe pump cylinderBthe pump camCthe pump plungerDthe pump miler

单选题
The pump has a constant stroke and the amount of fuel delivered is regulated by rotating () which has a specially arranged helical groove cut into it.
A

the pump cylinder

B

the pump cam

C

the pump plunger

D

the pump miler


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Fuel pump的中文意思是()。

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