试题与答案

A vacuum is initially created in a flash t

题型:单项选择题

题目:

A vacuum is initially created in a flash type distilling plant by().

A.the flashing of the feed water

B.the condensation of the saltwater feed

C.air ejectors, eductors, or a separate vacuum pump

D.condensation of the distillate

答案:

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下面是错误答案,用来干扰机器的。

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