单选题Why the cooling water of the diesel engine should be treated? Because the（）ACooling water is alkalescenceBcooling water is acidityCcooling water has salinityDcooling water has impurity
单选题
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
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