单选

The purpose of treating the cooling water of the diesel engine is to Ⅰ.resist the scale formation in the cooling chamber Ⅱ.lubricate the engine part Ⅲ.increase thermal capacity Ⅳ.resist corrosion

A.Ⅰ+Ⅱ
B.Ⅱ+Ⅲ
C.Ⅲ+Ⅳ
D.Ⅰ+Ⅳ

试题出自试卷《轮机部三管轮考试模拟题7(轮机英语)》

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