Combustion gases formed in the cylinder of a diesel engine are prevented from blowing past the piston by （）<br>A:cylinder valves<br>B:compression rings<br>C:piston skirts<br>D:oil rings

Combustion gases formed in the cylinder of a diesel engine are prevented from blowing past the piston by （）
A:cylinder valves
B:compression rings
C:piston skirts
D:oil rings

出自：海船船员证

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