The engine will fail to start unless （）.<br>A:the pressure of the starting air is high enough<br>B:there is enough air in the air reservoirs<br>C:the air is supplied into the cylinders in the appropriate sequence<br>D:all of the above

The engine will fail to start unless （）.
A:the pressure of the starting air is high enough
B:there is enough air in the air reservoirs
C:the air is supplied into the cylinders in the appropriate sequence
D:all of the above

出自：海船船员证

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