Daily Water Treatment Question (12.25)
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Merry Christmas! Exchange flowers with each other; don’t forget to give me flowers when answering questions – I’ll return them to you! Multiple-choice question: The treatment of the “three types of sludge” in the workshop involves concentration before they enter the centrifuge. A. Once B. Twice C. Three times D. Four times Answer: A
The “three sludges” in the workshop were concentrated at stage C before being fed into the centrifuge. A. Once B. Twice C. Three times D. Four times