余氯(residual chlorine)
饮水消毒时,需氯量等于A、加氯量+余氯量B、加氯量-余氯量C、加氯量×余氯量D、加氯量/余氯量E、以上都不是
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The water in an auxiliary boiler should be tested for chloride content to determine ( ).A.total dissolved solidsB.salt contaminationC.water harcnessD.chlorine contamination
Your tow includes a barge carrying chlorine.Which special requirements must be observed ________.A.The wing voids shall not be opened when underwayB.You must post a deckhand to keep a special watch on this bargeC.A cargo information card for chlorine must be in the pilothouseD.All of the above
we will try our best to solve the residual problems.A:geographical B:complex C:domestic D:remaining
余氯有三种形式即总余氯、化合性余氯、游离性余氯。
需氯量等于()。A、加氯量+余氯量B、加氯量一余氯量C、加氯量×余氯量D、加氯量÷余氯量E、加氯量一需氯量
氯消毒时,下列关于折点的描述正确的是()。A、折点前产生的余氯均为化合性余氯B、折点前产生的余氯既有化合性余氯也有游离余氯C、折点前不产生余氯D、折点后产生游离性余氯