【Daily Question】Pump Equipment Technical Exchange Edition 20180323

2018-03-23View Original

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Participation: Prize 3 Wealth； Correct answer: Reward of 10 wealth points ； Note: A reward of 10 wealth points will be given for correct answers within 48 hours; this post is valid for 48 hours. Multiple-choice question: The purpose of installing a pre-pump for a variable-speed water pump is ( ). . A. Prevent impact B. Prevent noise C. Prevent cavitation D. Increase pressure Correct answer: C https://attach01.hcbbs.com/forum/201801/05/235057wnwxbzxb311ikvvz.jpg.thumb.jpg

Reply #22018-03-23

C, could the boss add an explanation after the answer to each question?

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【Daily Question】Pump Equipment Technical Exchange Edition 20180323

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