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问题

The process of scavenging a two-stroke/cycle diesel engine serves to____________.A.improve


The process of scavenging a two-stroke/cycle diesel engine serves to____________.

A.improve fuel flow volume

B.cool the exhaust valves

C.reduce the intake air charge density

D.increase the temperature of exhaust gases

请帮忙给出正确答案和分析,谢谢!

参考答案
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