【Daily Question No. 082】2018.03.23

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【Daily Question No. 082】March 23, 2018. Common methods for detecting whether lubricant has deteriorated include the oil flow observation method, the hand-twisting method, （ ）, and the oil droplet trace method. A. Titration method B. Distillation method C. Filtration method D. Illumination method D (Unless otherwise specified, each question is based on hydrogenation units.) ) For management purposes, if you need to view content from a few days ago, please access it through the summary post below. “My Registration Season” event – (currently ongoing in the Chemical Engineering section) https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1897835
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