If the compression ratio is increased on any diesel engine, （）<br>A:the expansion ratio will decrease<br>B:combustion will be slowed down<br>C:thermal efficiency will decrease<br>D:thermal efficiency will increase

If the compression ratio is increased on any diesel engine, （）
A:the expansion ratio will decrease
B:combustion will be slowed down
C:thermal efficiency will decrease
D:thermal efficiency will increase

出自：海船船员证

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