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【Daily Question No. 099】April 09, 2018

2018-04-09View Original

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【Daily Question No. 099】April 09, 2018: The raw material backwash filter is used to prevent ( ) from entering the reactor. A. Alkaline nitrogen B. Aromatic hydrocarbons with fused rings C. Mechanical impurities D. Dissolved iron. C (Unless otherwise specified, all questions and answers are based on hydrogenation units.) ) For management purposes, if you need to view content from a few days ago, please go through the summary post below. https://bbs.hcbbs.com/home.php?mod=space&uid=719164&do=thread&view=me&from=space Special section for registered users – Voting post for the “My Registration Season” campaign. https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1954223 The APP short-video skills competition has started! https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1951670

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