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<br>A:Ⅰ+Ⅱ<br>B:Ⅱ+Ⅲ<br>C:Ⅲ+Ⅳ<br>D:Ⅰ+Ⅳ

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

出自：海船船员证

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