【Daily Question No. 246】2017.09.04

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【Daily Question No. 246】September 4, 2017: Misalignment of the coupling centers or inappropriate clearance of the bearing shells can both cause vibration in cyclohydrogen compression units. ( ) Check the reference answers after responding; scoring is granted by identifying the key points. (Unless otherwise specified, all questions and answers are based on hydrogenation units.) ) The answer to the daily activity question has changed; today’s answer will be shown in subsequent questions. For management purposes, if you need to view content from a few days ago, please access it through the summary post below. 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 (Source: Haichuan Chemical Industry Forum)