The intake ports of a two-strike/cycle diesel engine are opened and closed by the action of the （）<br>A:camshaft<br>B:piston movement<br>C:exhaust valves<br>D:vertical drive

The intake ports of a two-strike/cycle diesel engine are opened and closed by the action of the （）
A:camshaft
B:piston movement
C:exhaust valves
D:vertical drive

出自：海船船员证

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