单项选择题
A.consume B.distill C.run D.operate
Clean oil is achieved in a clarifier bowl where the imp...
单项选择题Clean oil is achieved in a clarifier bowl where the impurities and water collect at the bowl （）.
A.bottom B.top C.center D.periphery
The fresh water generator produces fresh water （）.A.by ...
单项选择题The fresh water generator produces fresh water （）.
A.by cooling sea water B.by heating sea water C.by evaporation of sea water D.by purifying sea water
Because of the reduced （） in the vacuum boiling evapora...
单项选择题Because of the reduced （） in the vacuum boiling evaporator, some of the sea water boils as it flows through the tubes.
A.temperature B.water level C.pressure D.rate of flow
