单项选择题
A.salinity is abnormally high B.steam demand is too high C.water level is abnormally low D.feedwater flow is low
Lubricating oil is supplied to the crank-pin bearings i...
单项选择题Lubricating oil is supplied to the crank-pin bearings in a marine diesel engine by （）.
A.internal crankshaft passages B.immersion in oil C.splash lubrication D.injection lubrication
What function is provided by the crankcase ventilation ...
单项选择题What function is provided by the crankcase ventilation system on some diesel engines?（）
A.Increases the sludge forming tendency of lube oil B.Prevents the accumulation of combustible gases C.Improves lube oil cooling D.Improves cold weather starting
Increasing the valve clearance between a valve stem and...
单项选择题Increasing the valve clearance between a valve stem and rocker arm, will result in the valve （）
A.closing later B.opening sooner C.staying open for a shorter period of time D.staying open for a longer period of time
