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One question per day; those who answer correctly receive 6 wealth points, while participants receive 2 wealth points; August 03

2016-08-03View Original

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Single-choice question: In the production of polyvinyl chloride by the calcium carbide method, during the feeding of the monomer, the pressure in the monomer storage tank should be kept below ( ). A. 0.6Mpa ; B. 0.5Mpa ; C. 0.4Mpa D. 0.3Mpa Answer: D. 0.3Mpa

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