单选题While inspecting the main bearings on a diesel engine you find impregnated dirt and scratches in the bearing surface you would, therefore, suspect that （）Athe bearing had been overheatedBwater was present in the oilCthe lube oil was not being properly filteredDthe maximum allowable bearing pressure had been exceeded
单选题
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
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相关考题：
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