One Question per Day on Synthetic Ammonia 344 (Friday, 1-6-2012)

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Multiple-choice question: 1. Based on the parameters of measurement and transmission, transmitters can be classified into differential pressure transmitters, pressure transmitters, level transmitters, and ( ) transmitters. (A) Flow rate (B) Density (C) Volume (D) Weight 2. Radiant thermometers are used to measure objects with temperatures higher than ( )°C. (A) 800 (B) 900 (C) 700 (D) 1,000. The purpose of the “One Question per Day” activity on the basics of ammonia synthesis 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, go to: http://bbs.hcbbs.com/thread-492556-1-1.html. Please do not edit after replying. Answer A A