Basic Knowledge of Boilers: [Question of the Day] 2011.03.26

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This post was last edited by Benben Xuan on 2011-3-27 09:32. Please hide your replies; think carefully before posting, as edits are invalid! Those with different views on the provided answer keys can post discussions the next day. For multiple accounts under the same IP, only the first response indicating participation is valid. All participants receive 2 points; this round consists of multiple-choice questions, with 5 points awarded for each correct answer. In principle, scores are given to the top 50 respondents who answer within 24 hours. Please hide your replies; the method for doing this is: http://bbs.hcbbs.com/thread-492556-1-1.html. Among the temperature measurement instruments mentioned in DL/T819—2002 \"Technical Specifications for Welding Heat Treatment in Thermal Power Plants\", which ones belong to non-contact temperature measurement instruments? a. Thermocouple b. Infrared thermometer c. Temperature gun d. Contact surface thermometer Answer: B