A diesel engine cooling water system with a pH factor of 3.0 indicates a condition of ____

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A diesel engine cooling water system with a pH factor of 3.0 indicates a condition of _____.

A.slight acidity

B.slight alkalinity

C.excessive alkalinity

D.excessive acidity

请帮忙给出正确答案和分析,谢谢!

热搜:a是b的充分条件,b是a的必要条件吗