Why the cooling water of the diesel engine should be treated? Because the（）<br>A:Cooling water is alkalescence<br>B:cooling water is acidity<br>C:cooling water has salinity<br>D:cooling water has impurity

Why the cooling water of the diesel engine should be treated? Because the（）
A:Cooling water is alkalescence
B:cooling water is acidity
C:cooling water has salinity
D:cooling water has impurity

出自：海船船员证

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