單項選擇題

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

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單項選擇題

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

單項選擇題

We use （） to distill fresh water from sea water.

A.engine
B.sea water pump
C.cylinder cooler
D.fresh water generator

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