Class C Drinking Water Practice Test, Categorized – Each ...

Class C Drinking Water Practice Test, Categorized – Each worth 1.333 pts. Corrosion Control ... 27.The operator of the ion exchange water treatment plant notices that one of the ion exchange units has a finished water hardness of one grain. ... an operator could have his/her license permanently revoked for doing what? A. Falsified or ... ................
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