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Participation: Prize 1 Wealth; Correct answer: Reward of 3 wealth points ; Note: This post is valid for 48 hours. Single-choice question: Under other constant conditions, if the proportion of light components in the feed decreases, which of the following statements accurately describes the composition of the materials at the top and bottom of the distillation column? A. The purity of the material at the bottom decreases, while the purity of the material at the top increases. B. The purity of the material at the bottom increases, while the purity of the material at the top decreases. C. The purity of both the material at the bottom and the material at the top remains unchanged. D. The purity of the material at the bottom remains unchanged, while the purity of the material at the top decreases. Answer: B. Your participation is the greatest support for our work. Giving roses to others leaves a pleasant fragrance in one’s own hands. https://bbs.hcbbs.com/static/image/hrline/1.gif https://bbs.hcbbs.com/static/image/hrline/2.gif Note: The answers will be released automatically after two days. “My Device, My Home – Large-Scale Original Photo Sharing Event (Part 2): https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1868167&extra=page%3D1 【Q&A】Summary of Catalytic Coking and Reforming Oil Blending Data for 2017–2018~~Continuously being updated: https://bbs.hcbbs.com/thread-1826018-1-1.html 【Daily Question】Summary of Catalytic Coking and Reforming Oil Blending Data for 2017–2018~~Continuously being updated: https://bbs.hcbbs.com/thread-1811219-1-1.html
B. The purity of the material at the bottom of the tower increases, while the purity of the material at the top of the tower decreases