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This post was last edited by ren6602121 on 2015-10-12 at 08:15. In order to increase the popularity of the container section, an \"One Question per Day\" activity was initiated under the guidance of the leaders, aiming to foster active technical exchanges while also providing financial rewards to users. When copper and copper alloys are used for pressure-bearing components in pressure vessels, they should generally be of grade B. A) Hot-rolled state B) Annealed state C) Cold-worked hardened state D) Pressed state E) Forged state Reply with the answer you think is correct; participating in the quiz earns +1 wealth point (points are added automatically per the rules; no additional points or comments will be given if your answer is incorrect). +3 wealth points will be awarded if all answers are correct. Additional points will be given for providing detailed explanations or analyses of the questions and answers. If your answer is correct and your explanation is accurate, it will be marked as the best reply (best assistance). Feel free to answer; please do not reply repeatedly ； If a, b, c, and d are all correct, choose e; answering a, b, c, d, e will result in no points. Note: We will close this post after 24 hours to announce the answers and explanations, as well as the best reply (the best assistance). Attraction Bonus: 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 have a moderator 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 and opinions. 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 contestant +2 charm points, and so on, with the highest score earning +5 charm points. http://bbs.hcbbs.com/thread-1381938-1-1.html Getting wealth by inviting friends http://bbs.hcbbs.com/thread-1389197-1-1.html Seeking sponsorships from manufacturers
When copper and copper alloys are used for the pressure-bearing components of pressure vessels, they should generally be in state D) compressed
b...............................
B, annealed state~~~~~~~~~~~~
When copper and copper alloys are used for the pressure-bearing components of pressure vessels, they should generally be of grade B
When copper and copper alloys are used for the pressure-bearing components of pressure vessels, they should generally be (B)
Answer: When copper and copper alloys are used for the pressure-bearing components of pressure vessels, they should generally be in: B) annealed condition.
B) Annealed state. However, when used as heat exchange tubes, it is generally in a semi-hard state
When copper and copper alloys are used for the pressure-bearing components of pressure vessels, they should generally be (B)
When copper and copper alloys are used for the pressure-bearing components of pressure vessels, they should generally be (B). A) Hot-rolled state B) Annealed state C) Cold-worked hardened state D) Pressed state E) Forged state