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This post was last edited by liuquan1100 on 2017-8-7 22:12. [Daily Question No. 138] On 2017.05.18, the ability of paraffin products to resist the effects of heat without their properties undergoing permanent changes is referred to as ( ). A. Thermal oxidation stability B. Light stability C. Thermal stability. The reference answer can be seen after responding; points will be awarded if the key points are answered correctly. (Unless otherwise specified, all questions and answers are based on hydrogenation units.) ) Scoring criteria: 2 Wealth points for incorrect answers; *incomplete* answers earn 3–8 points. 10 Wealth points are given for correct answers accompanied by detailed explanations; answers that are correct but lack sufficient details earn 15–20 Wealth points. Please use these criteria for scoring. Note: If there are editing records after answering, only points will be awarded to those who participated. 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