While inspecting the main bearings on a diesel engine you find impregnated dirt and scratches in the bearing surface you would, therefore, suspect that ()

A . the bearing had been overheated B . water was present in the oil C . the lube oil was not being properly filtered D . the maximum allowable bearing pressure had been exceeded

时间:2022-09-20 01:15:02 所属题库:船舶电气与船舶安全题库

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