【Daily Question】Catalytic Cracking, Coking, and Reforming Version 20170217
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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/4.gif Fill-in-the-blank question (Coking section): Diesel grades are classified by ( ). Correct answer: Freezing point. Petrochemical sector – An activity aimed at generating new energy-saving ideas through creative thinking: http://bbs.hcbbs.com/thread-1669271-1-1.html Xiaomi phones are waiting for you to claim them
Diesel grades are classified by (freezing point).
Diesel can be classified into different grades such as 10#, 0#, -10#, -20#, -35#, -50#, etc., based on its freezing point.