One Question per Day on Synthetic Ammonia 351 (Friday, 1/13/2012)

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This post was last edited by TH373637 on 2012-1-14 09:22. Multiple-choice question: 1. For the installation of an orifice plate, there must be a ( )D long straight pipe section in front of it. (A) 1.5～2.0 (B) 10～15 (C) 5 (D) 10 2. The standard throttling elements include ( ). (A) Orifice plate (B) Nozzle (C) Venturi tube (D) A and B, C. The purpose of the “One Question per Day” activity on basic knowledge of ammonia production is to review what we have already learned, to improve and strengthen everyone’s fundamental theoretical knowledge as they answer questions, to help them remember what they know, to restore memories that have been forgotten, and to foster further discussion on controversial topics, thereby enabling all of us to make 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, go to: http://bbs.hcbbs.com/thread-492556-1-1.html. Please do not edit after replying. Answers A D