【Daily Question 2019】Hydrogen production and hydrogenation section – Question No. 5-03

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【Daily Question 2019】Hydrogen production and hydrogenation section – Question No. 5-03: Based on their working principle, compressors can be divided into several types. To which type does a piston compressor belong? Based on their working principle, compressors can be divided into two types: speed-type and volume-type ； Piston compressors belong to the category of positive-displacement compressors. (Unless otherwise specified, all questions and answers are based on hydrogenation units.) ) Setting it to a reply earns 1 wealth point; those who answer correctly receive an additional 2 wealth points, while those who get it wrong receive no points at all. Please have the person in charge update the wealth points consumed by the question setter as soon as possible. Temporarily, the top 60 players will receive automatic wealth +1. 3 correct for wealth, 1 incorrect for 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