There is an injection pump for each cylinder which is usually operated once every cycle by （） on the camshaft.

时间：2019-04-13 18:12:40 关键词：each,for,which

There is an injection pump for each cylinder, which is usually operated once every cycle by （） on the camshaft.

A.a gear

B.a cam

C.a rod

D.a miler

答案解析

B

举一反三

A number of cylinder liners are enclosed in one cast iron casing to form a （）.

On the top of the cylinder is mounted the cylinder cover which is pressed onto （） of the cylinder liner by means of nuts and studs.

When the follower is on the base circle of the cam the pump plunger is at the （） of its stroke.

At the top of the A-frames there is a strong cast iron frame called （）.

There is an injection pump for each cylinder which is usually operated once every cycle by （） on the camshaft.

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