A diesel engine cooling water system with a pH factor of 30 indicates a condition of （）.<br>A:slight acidity<br>B:slight alkalinity<br>C:excessive alkalinity<br>D:excessive acidity

A diesel engine cooling water system with a pH factor of 30 indicates a condition of （）.
A:slight acidity
B:slight alkalinity
C:excessive alkalinity
D:excessive acidity

出自：海船船员证

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