【Daily Question】2015.11.06 Main stressed components (2 Wealth points for a reply + 3–8 additional Wealth points for a correct answer)

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This post was last edited by zzhaichuan on 2015-11-7 at 11:33. The Mechanical Section has introduced the \"Question of the Day\" feature, which not only helps to foster an active atmosphere for technical discussions and guide the direction of such exchanges but also provides users with financial rewards, enabling them to experience various cool features. Question: Among the following container components, which one is considered a primary pressure-bearing element? (_________) a. The reinforcement plate for the openings in the container ； b. Fittings with a diameter < 250 mm c. Main bolts for M42 equipment ； d. Heat exchanger expansion joints. Note: We will close this thread after 24 hours, and at that time we will announce the best response (the best help), along with the answer and explanation. Charisma Reward: Those who post a topic in this section within two days to provide a detailed explanation or discussion on the knowledge points related to this topic are asked to reply/comments in this post to inform us, and we will award extra charisma points. It is not allowed to simply copy and paste; original content is preferred, with at least some organization by the user along with personal insights and opinions. After registration, we will rank participants based on the content of their posts: the last-place contestant will receive +1 charm, the second-to-last +2 charm, and so on, with the highest score earning +5 charm. http://bbs.hcbbs.com/thread-1381938-1-1.html Earning wealth by inviting friends http://bbs.hcbbs.com/thread-1389240-1-1.html [Mechanical Section] Collection of essential knowledge 【Seeking manufacturer sponsorship】 (long-term campaign)