单项选择题
The designed capacity is 25 tons a day, but the fresh water generator can only （） 22 tons at present.
A.consume B.distill C.run D.operate
单项选择题 Clean oil is achieved in a clarifier bowl where the impurities and water collect at the bowl （）.
单项选择题 The fresh water generator produces fresh water （）.
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.
