Process Design: 【One Question per Day】2010-12-27 (Monday)
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This post was last edited by Litaotao1314 on 2010-12-26 at 22:18. Multiple-choice question: High-temperature electric heating tapes are used for heating and insulating industrial equipment, as well as tanks, pipes, and tanks in laboratories located in areas with a relative humidity of less than (), where there is no risk of explosion; they can also be used for heating other types of containers. A. 50% B. 75% C. 80% D. 85% Note: 1) All participants will receive a reward ； 2) Please hide your replies; the method to do this is: http://bbs.hcbbs.com/thread-492556-1-1.html. Do not edit the replies after posting them. 3) The answer is as follows. Answer: C Refer to HG/T 20570-95
It should be C; outside of the standards, different applications may vary as well