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English Translations » LNG相关技术圈 » 【Daily Question】LNG-related Technology Exchange Edition 2020

【Daily Question】LNG-related Technology Exchange Edition 20200519

2020-05-19View Original

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Participation: Prize 1 Wealth； Correct answer: 3 wealth rewards ； Note: This post is valid for 48 hours. https://bbs.hcbbs.com/static/image/hrline/2.gif Multiple-choice question: Before starting a centrifugal pump, the pump is filled with liquid first; the purpose of this is ( ). (A) Negative pressure is generated at the center of the impeller to draw in liquid. (B) Operational safety. (C) Improved pump efficiency. (D) Increased head. Answer: A. Your participation is the greatest support for our work.
Reply #22020-05-20
(A) Negative pressure is generated at the center of the impeller to draw in liquid

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Translated at 2026-07-23 10:05:06

Original: https://bbs.hcbbs.com/thread-3000081-1-1.html

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