单项选择题
A.jacket water outlet B.cooling water pump outlet C.heat exchanger outlet D.expansion tank atmospheric vent
With respect to the flow of lubricating oil through a d...
单项选择题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
The bearings used to support the crankshaft are general...
单项选择题The bearings used to support the crankshaft are generally called （）
A.line shaft bearings B.connecting rod beatings C.main bearings D.support bearings
Improper maintenance of an automatic auxiliary boiler o...
单项选择题Improper maintenance of an automatic auxiliary boiler oil burner could result in （）.
A.fuel pump failure B.fan motor failure C.increased feedwater consumption D.decreased boiler efficiency
