A diesel engine could fail to start because of （）<br>A:incorrect injection timing<br>B:low exhaust back pressure<br>C:floating exhaust valves<br>D:excessive cranking speed

A diesel engine could fail to start because of （）
A:incorrect injection timing
B:low exhaust back pressure
C:floating exhaust valves
D:excessive cranking speed

出自：海船船员证

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