【Daily Question】Catalytic Coking Reformate Blending Version 20170418

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To increase the popularity of this section, a daily quiz activity has been launched. The purpose of this activity 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, they can also easily bring wealth home :) . Participation: Prize of 5 Wealth ； Correct answer: Reward of 10 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 5-8 wealth points. This post is valid for 48 hours. http://bbs.hcbbs.com/static/image/hrline/5.gif Multiple-choice question (Catalysis section): Before starting the main fan, the inlet butterfly valve is open ( ). A: 5-10% B: 20-30% C: 40-50% D: Over 50% Correct answer: A: 5-10% http://bbs.hcbbs.com/hcdown/data/attachment/forum/201704/07/122423adihsdie34h3gsgd.jpg.thumb.jpg======================== Petrochemical Sector—New Ideas for Energy Savings: An Innovative Contest (Sponsors Wanted; Highest Rewards Ever) http://bbs.hcbbs.com/thread-1666758-1-1.html Sponsors are being sought for this event; those interested can contact the event organizer. The Petrochemical Deep Processing Edition—An Event to Share Pictures of Chemical Equipment Has Started! A vast amount of wealth, as well as HChuan coins, are waiting for you to claim them: http://bbs.hcbbs.com/thread-1760733-1-1.html. Notice regarding the collection of chemical engineering technical materials in the \"Petroleum and Chemicals Section\": http://bbs.hcbbs.com/thread-1614796-1-1.html