Blow-off of the relief valves of the main cylinders during operation indicates （）.
- Athe cylinder cover is cracked
- Bthe injector holes is clogged
- Cthe cams are not properly set
- Dfuel pump is leaking
问题
Blow-off of the relief valves of the m
参考解析：
分类：船舶动力装置题库,海船船员考试题库
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