【Daily Question】Catalytic Coking Reformate Blending Version 20171217
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Participation: Prize of 5 Wealth； Correct answer: Reward of 10 wealth points ； Note: This post is valid for 48 hours. Single-choice question: The reason for air locking in a centrifugal pump is ( ). A. The motor power of the centrifugal pump is low. B. The pressure at the inlet of the pump is lower than the saturated vapor pressure of the liquid. C. The sealing performance of the centrifugal pump is poor. D. Gas is present inside the pump, resulting in a low pressure at the center of the impeller, which does not meet the pressure difference required to draw in liquid. Answer: D. Your participation is the greatest support for our work. Giving roses to others leaves a pleasant fragrance in one’s own hands. https://bbs.hcbbs.com/static/image/hrline/1.gif https://bbs.hcbbs.com/static/image/hrline/2.gif Note: The answers will be published automatically after two days. “My Device, My Home – Large-Scale Original Photo Sharing Event (Part 2): https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1868167&extra=page%3D1 【Q&A】Summary Post on Catalytic Coking and Reforming Oil Blending for 2017: https://bbs.hcbbs.com/thread-1826018-1-1.html 【Daily Question】Summary Post on Catalytic Coking and Reforming Oil Blending for 2017: https://bbs.hcbbs.com/thread-1811219-1-1.html
D. Gas is present inside the pump, resulting in low pressure at the center of the impeller, which is insufficient to create the pressure difference required to draw in liquid
D. Gas is present inside the pump, resulting in low pressure at the center of the impeller, which is insufficient to create the pressure difference required to draw in liquid
D. Gas is present inside the pump, resulting in low pressure at the center of the impeller, which is insufficient to create the pressure difference required to draw in liquid