单项选择题
A.saltwater heater shell B.the condensation of the saltwater feed C.air ejectors, eductors, or a separate vacuum pump D.condensation of the distillate
In the two stage flash distilling plant, which of the p...
单项选择题In the two stage flash distilling plant, which of the pumps listed is vented to the shell of the second stage in order to remove vapor from the pump suction?（）
A.Condenser circulating water pump B.Feed-water heater drain pump C.Distillate pump D.Air ejector condenser drain pump
The purpose of an oil mist detector in a main propulsio...
单项选择题The purpose of an oil mist detector in a main propulsion diesel engine is to warn of （）
A.excessive mist density in the crankcases B.excessively high crankcase vacuum C.excessively high bearing temperature D.excessive carbon buildup in the lube oil
Permitting a diesel engine fuel oil day tank to run dry...
单项选择题Permitting a diesel engine fuel oil day tank to run dry can cause （）
A.overheated injection pumps B.water condensation in the cylinders C.fuel dilution of the lube oil D.air in the fuel system
