[Daily Question] [Static Equipment Exchange Edition...Question 41] Multiple choice question on December 26, 2018...Wealth

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bg10.png [Daily question] [Static Equipment Exchange Edition...Question 41] Multiple choice question on December 26, 2018... Please fill in the answers (multiple choice, single choice, single choice) in order. Bonus rules: Participation will reward 1 wealth, and correct answers will reward 3 wealth for each item, with a maximum of 10 wealth. This topic is valid for two days and will not be graded for more than two days and 48 hours. At the beginning of this topic, friends can recommend [Weekly Topic], and you can choose to participate in the [Weekly Topic] link below. [Weekly Topic] [Static Equipment Exchange Edition...Question 1] December 8-16, 2018...Welding Deformation Discussion-Haichuan Coin Rewards https://bbs.hcbbs.com/thread-2192846-1-1.html [Weekly Topic] [Static Equipment Exchange Edition...Question 2] December 17-23, 2018... Case sharing will be richly rewarded with Haichuan coins https://bbs.hcbbs.com/thread-2221480-1-1.html [Weekly Topic] [Static Equipment Exchange Edition...Question 3] December 24-31, 2018...Secondary Processing Issues - Haibi Reward https://bbs.hcbbs.com/thread-2225888-1-1.html 1. Gas explosion refers to the phenomenon in which flammable substances are mixed with () into a certain concentration and burn instantly under a certain heat source, causing a fire, releasing a large amount of heat, and producing a loud noise. A. Hydrogen B. Air (oxygen) C. Carbon monoxide D. Other oxidants 2. The electricity consumption for lighting for inspection after entering the pressure vessel shall not exceed (). A, 12V B, 24V C, 36V D, 220V 3. Fatigue damage means that the pressure vessel is subjected to periodically changing alternating loads, and fatigue cracks occur in the concentrated parts of the alternating stress and cause damage. () A. Correct B. Wrong answer 1. BD 2. B 3. A