One question per day; those who answer correctly receive 6 wealth points, while participants receive 2 wealth points； Question 480
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This post was last edited by YongBu※YanQi on April 1, 2016, at 20:02. Multiple-choice question: During the distillation process of vinyl chloride monomer produced by the calcium carbide method, the main reasons for a high content of high-boiling substances are ( ). A. High temperature at the bottom of the tower B. Low reflux rate C. Unstable liquid level control D. Small amount of high-boiling substances being discharged. Answer: ABCD
abc, the poster should clarify whether it’s a single-choice, multiple-choice, or open-ended question!