The compressed air is admitted to each cylinder through a cam operated by starting air valve when the piston has just passed its （）.

时间：2019-04-14 06:47:48 关键词：each,to,cylinder

The compressed air is admitted to each cylinder through a cam operated by starting air valve when the piston has just passed its （）.

A.BDC

B.TDC

C.BBDC

D.ATDC

答案解析

B

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