When distilling sea water the cooling water discharging from the distiller is fed back to evaporator as feed water _____.

题库:二管轮 类型:最佳选择题 时间:2019-02-19 18:37:56 免费下载:《第二章 船舶辅助机械》Word试卷

When distilling sea water the cooling water discharging from the distiller is fed back to evaporator as feed water _____.
A.to decrease scale formation
B.for better cooling effect
C.for more economical purpose
D.to raise vacuum

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