【Daily Question】8.31 Design a seal Return +2； To +3

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This post was last edited by ren6602121 on 2015-9-1 08:30. In order to increase the popularity of the container section, an \"One Question per Day\" activity was launched under the guidance of the leaders, aiming to foster active technical exchanges while also providing members with financial rewards. The qualification seal of the pressure vessel design unit must be affixed to the general layout diagram B. A) Bottom view of the pressure vessel designed by our unit B) Blueprint of the pressure vessel designed by our unit C) Blueprint of the pressure vessel designed by another unit. Reply with the answer you think is correct; participating in the quiz earns +1 wealth point (points are added automatically according to the rules). If your answer is incorrect, no additional points or feedback will be given. Answering all questions correctly earns an additional +3 wealth points. If you provide a detailed explanation or analysis of the questions and answers, you will receive extra wealth points as well. If your answer is correct and your explanation is accurate, it will be marked as the best reply (the best assistance). Feel free to answer; please do not reply repeatedly ； If a, b, c, and d are all correct, select e; answering a, b, c, d, e will result in no points. Note: We will close this post after 24 hours to reveal the answers and explanations, as well as the best response (the best help). Attraction Reward: If you post a topic in this section within two days to provide a detailed explanation of the knowledge points covered in this question, please reply to this post to inform us, and we will ask a moderator to grant you +Attraction. 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. After registration, we will rank participants based on the content of their posts: the last-place contestant will receive +1 charm point, the second-to-last place +2 charm points, and so on, with the highest score earning +5 charm points. http://bbs.hcbbs.com/thread-1381938-1-1.html Inviting friends to join earns wealth. http://bbs.hcbbs.com/thread-1389197-1-1.html Seeking sponsorships from manufacturers