【Daily Question 2019】Hydrogen production and hydrogenation section – Question No. 026

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This post was last edited by Internet Invisible Man on 2019-1-26 09:16 under 【Daily Question 2019】 – Hydrogen production and hydrogenation section; Question No. 026: What could be the possible reasons for failure due to improper selection of mechanical seal materials? Multiple choice: A. Inappropriate matching of seal surface materials; B. Poor pressure resistance; C. Poor corrosion resistance. 123 (Unless otherwise specified, each question is based on hydrogenation units.) ) Correct: 3 wealth, Incorrect: 1 wealth ； 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