Excessive vibration in an operating diesel generator may be caused by （）<br>A:electrical overload<br>B:surging at governed RPM<br>C:loose engine mounting bolts<br>D:coolant leaking into the cylinder

Excessive vibration in an operating diesel generator may be caused by （）
A:electrical overload
B:surging at governed RPM
C:loose engine mounting bolts
D:coolant leaking into the cylinder

出自：海船船员证

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