Modern marine diesel engines equipped with mechanical fuel injection operate on a combustion phase within the cycle which is（）<br>A:entirely constant pressure<br>B:entirely constant temperature<br>C:a combination of constant volume and constant pressure<br>D:a combination of constant temperature and constant pressure

Modern marine diesel engines equipped with mechanical fuel injection operate on a combustion phase within the cycle which is（）
A:entirely constant pressure
B:entirely constant temperature
C:a combination of constant volume and constant pressure
D:a combination of constant temperature and constant pressure

出自：海船船员证

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