单项选择题
A.jacket water outlet B.expansion tank inlet C.heat exchanger inlet D.cooling water pump outlet
The lube oil cooler is located after the lube oil filte...
单项选择题The lube oil cooler is located after the lube oil filter in order for （）
A.the filter to operate more efficiently B.the lube oil cooler to be bypassed C.positive lube oil pump suction to be assured D.galvanic action in the cooler to be minimized
In a large, slow-speed, main propulsion diesel engine, ...
单项选择题In a large, slow-speed, main propulsion diesel engine, which of the parts listed is under tension when the engine is running?（）
A.Bed plate B.Column C.Entablature D.Tie rod
The color of the exhaust from a diesel engine should be...
单项选择题The color of the exhaust from a diesel engine should be （）
A.clear B.hazy light brown C.hazy light blue D.hazy light grey
