正确答案: A

fresh water

题目：In a central cooling system, used in some modem ships, sea water is supplied to cool （）which will circulate to other individual cooler, greatly reducing the corrosion problems.

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学习资料的答案和解析：

[单选题]舵系中心线与轴系中心线应该（）。

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[单选题]It is very necessary that each cylinder （） before the charged air is compressed.

be scavenged

[单选题]Indirect cooling of fuel injector nozzle holders for diesel engines is accomplished primarily by （）.

heat conduction into the water jacket wall