In any diesel engine closed freshwater cooling system, the lowest pressure exists at the （）.

With respect to the flow of lubricating oil through a diesel engine, the lube oil coolers are located after filters in order to （）.

A.allow filtration of less viscous oil
B.decrease the pressure drop across the filter
C.improve overall filtration
D.all of the above

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The bearings used to support the crankshaft are generally called （）

A.line shaft bearings
B.connecting rod beatings
C.main bearings
D.support bearings

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