【Daily Question No. 339】December 11, 2018
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【Daily Question No. 339】On December 11, 2018, when loading the catalyst, a certain amount of ceramic balls were also added. What is the main function of these ceramic balls? Multiple-choice: A. Prevent displacement and sinking of the catalyst bed during operation B. Delay catalyst coking C. Can filter impurities in the oil D. Prevent short circuits from forming in the catalyst with the oil. Answer: A is correct; 3 correct, 1 incorrect ； Mass posting of posts – rated based on the lowest score ； Replies that are unrelated to the answer are considered spam and will be deleted immediately. For management purposes, if you need to view content from a few days ago, please go to https://bbs.hcbbs.com/home.php?mod=space&uid=3862647&do=thread&view=me&from=space through the summary post below
A. Prevent displacement and sinking of the catalyst bed during operation
A. Prevent displacement and sinking of the catalyst bed during operation