While inspecting the main bearings on a diesel engine you find impregnated dirt and scratches in the bearing surface you would, therefore, suspect that （）<br>A:the bearing had been overheated<br>B:water was present in the oil<br>C:the lube oil was not being properly filtered<br>D:the maximum allowable bearing pressure had been exceeded

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

出自：海船船员证

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