One question per day on synthetic ammonia – Multiple choice questions, Sunday, February 5, 2012

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This post was last edited by shanypr on 2012-2-5 10:36. Multiple-choice question: 1. The type of fire that cannot be extinguished using a carbon dioxide fire extinguisher is ( ). A Precision instruments B Electrical equipment C Metal oxides D Books and archives. 2. When working at heights in the chemical plant’s production area (vertical height above the ground), it is necessary to wear a safety belt. A 1.5m B 2.0m C 4.0m D 3.0m. 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 hide and view the method: http://bbs.hcbbs.com/thread-492556-1-1.html-. Please do not edit after replying. Answer 1C; 2D