One question per day; those who answer correctly receive 6 wealth points, while participants receive 2 wealth points； July 28th
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Multiple-choice question: During the use of PVC suspension polymerization dispersants, since the dispersant solution with an alcoholysis degree of less than 50% is relatively viscous, the dispersant feeding pump should be ( ). A. Centrifugal pump B. Gear pump C. Diaphragm pump D. Both centrifugal pumps and gear pumps are possible ； Answer: B. Gear pump
Gear pump B is suitable for pumping viscous materials.