【Daily Question】Catalytic Cracking, Coking, and Reforming Version 20170203
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To increase the popularity of this section, a daily quiz campaign has been launched. The goal of this campaign is: “Learn a little bit every day, and make significant progress over ten days.” I hope everyone will participate actively; by learning and making progress, you can also easily bring wealth home :) . Participation: Prize of 3 Wealth ； Correct answer: Reward of 8 wealth points ； Note: Questions from the same day will receive full feedback if answered on the same day; answers given the next day will earn 3-5 wealth points. This post is valid for 48 hours. http://bbs.hcbbs.com/static/image/hrline/4.gif Multiple-choice question (Catalysis section): A catalyst is a non-toxic substance; the smaller its particles are, the easier it is to fluidize. A: Large B: Small Correct answer: B. Petrochemical area – an activity aimed at generating new ideas for energy savings, full of creative approaches: http://bbs.hcbbs.com/thread-1666758-1-1.html. Xiaomi phones are waiting for you to claim them
Multiple-choice question (Catalysis section): A catalyst is a non-toxic substance; the smaller its particles are (B), the easier it is to fluidize. A: Large B: Small