One Question per Day on Synthetic Ammonia – Multiple Choice 272 (Tuesday, 25/10/2011)
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Multiple-choice question 1: The explosion limit of CO is ( ). (A) 12%–74% (B) 4%–75% (C) 16%–25% (D) 20%–25% 2. The symptoms of mild CO poisoning are ( ). (A) Tinnitus (B) Dizziness (C) Vomiting (D) Headache. 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 1A; 2D
This post was last edited by zhengrd on 2011-10-25 08:10: 1.A2.ABCD/
Reply 1# shanypr B C
Reply 1# shanypr 1. A 2. ABCD
Reply 1# shanypr C,D