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This post was last edited by liuquan1100 on 2017-5-21 06:58. [Daily Question No. 141] May 21, 2017: The quality of diesel produced through catalytic cracking is higher than that of diesel obtained through direct distillation. ( ) A. Higher, because catalytic diesel contains a higher proportion of alkanes. B. Lower. C. It’s not certain. The reference answer can be seen after replying; scoring is possible by identifying the key points. (Unless otherwise specified, all questions and answers are based on hydrogenation units.) ) B rating criteria: 2 Wealth points for incorrect attempts; *incomplete* answers earn 3–8 points. 10 Wealth points are given for correct answers accompanied by detailed explanations; those with correct answers but incomplete supplementary *answers* receive 15–20 Wealth points. Please use these criteria for scoring. Note: If there are editing records after answering, only those who participated will be given points. For continuous malicious spamming, 2 points will be deducted each time, with no upper limit. Pure numbers, pure emojis, or random letters that have nothing to do with the answer are all considered malicious spamming. Points will start to be deducted after three warnings. 2017 Q&A Summary Thread (updates have begun) http://bbs.hcbbs.com/thread-1657793-1-1.html 2017 Daily Question Summary Thread (updates have begun) http://bbs.hcbbs.com/thread-1657794-1-1.html 2016 Q&A Summary Thread (updates completed) http://bbs.hcbbs.com/thread-1597792-1-1.html