问题描述：
[单选]
Diesel engine jacket water is used in the distillation process as the（）．
A．coolant for the distillate
B．coolant for the brine cooler
C．means of heating the feedwater
D．primary means of producing a vacuum within the distiller
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答案解析：无
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上一篇：When the prime movers of two paralleled generators are equipped with mechanical- hydraulic governors， and are operating within their designed range， the unit with the least amount of speed droop will（）．
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