[Daily question] [Static Equipment Exchange Edition...Question 44] Multiple choice question on December 29, 2018...Good luck is always with you

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This post was last edited by kareale88 on 2018-12-29 09:28 bg10.png [Daily question] [Static Equipment Exchange Edition...Question 44] Multiple choice question on December 29, 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. Sealing elements are divided into () seals according to sealing mechanism and sealing structure. A. Forced type (compressed by tightening the bolts) B. Self-tightening seal (compressed by the pressure inside the container) 2. The gauge pressure on a certain pressure vessel is 1.6MPa. At this time, the pressure in the container is (absolute pressure) MPa. A, 1.6 B, 1.7 C, 1.5 3. The spherical pressure vessel has uniform stress distribution and is the most ideal structural shape, but its manufacturing and installation requirements are high. () A. Correct B. Wrong answer 1. AB 2. B 3. A