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The opening of an exhaust valve on a modem, large,...

海船船员考试

单选题

The opening of an exhaust valve on a modem, large, low-speed, main propulsion diesel engine may be actuated by （）.

发布日期：2021-03-22

A.direct action of cam shaft

B.compressed air pressure

C.hydraulic “push rods”

D.direct action of the main piston moving down

标签： opening exhaust valve modem large

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