One Question per Day on Synthetic Ammonia 361 (Monday, 1/30/2012)
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Multiple-choice question: 1. Vacuum pumps do not include ( ). (A) Water ring type (B) Reciprocating type (C) Jet type (D) Vortex pump. 2. The gas transfer and compression machinery that is widely used in chemical production is ( ). (A) Fan (B) Centrifugal pump (C) Compressor (D) A and C. The purpose of the “One Question per Day” activity on the basics of ammonia production is to review the knowledge we have already learned. By answering questions, participants can improve and strengthen their fundamental theoretical knowledge, recall what they have forgotten, discuss controversial points, and progress together. The top 50 answerers will definitely receive a reward. Those who simply state the reasons for their choice will be given additional points as appropriate! Please reply with the answer hidden; otherwise it will be invalid. To view the hidden method, please visit: http://bbs.hcbbs.com/thread-492556-1-1.html. Please do not edit after replying. Answer D D
Study*, improve oneself DD
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This post was last edited by zgj2405 on 2012-1-30 13:42: D, D
1. A D vortex pump transfers kinetic energy to the liquid by using the force exerted by the rotating impeller on the liquid, thereby imparting an impulse in the direction of the liquid’s movement, which enables the transport of the liquid. Click here to add an image explanation for the pump. 2. D
For the first question, choose the reciprocating pump； For question two, choose the compressor