Production Technology [Question of the Day] Wednesday, December 07, 2011
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This post was last edited by Refinery Operator on 2011-12-8 07:05. Multiple-choice question: 1. The characteristics of ammonia synthesis production are: ( ), flammable and explosive, toxic and harmful. A. High temperature and high pressure B. Large scale C. Continuous production D. High costs and low returns. 2. The stabilizer that must be added to polypropylene of any grade is ( ). A. Antioxidants B. Smoothing agents C. Halogen absorbers D. Anti-aging agents 3. Synthetic resin raw materials generally contain a certain amount of antioxidants, and the purpose of this is ( ). A. To facilitate storage B. Increase costs C. Reduce costs D. Facilitate the reaction Note: 1. Please hide your replies; for instructions, see: http://bbs.hcbbs.com/thread-492556-1-1.html. 2. Do not edit after replying. 3. There must be a reward for participants. " Answer: A C A
1ABCD 2A 3A
Reply 1# cfzh56 aaa
A. High temperature and pressure A. Antioxidants A. For easier storage
Reply 1# cfzh56 1.A 2.A 3.A
1、a 2、d 3、c
This post was last edited and replied to by Peanut kernels on 2011-12-6 23:08: Reply 1# cfzh56 A, C, A
1 A 2 C 3 A