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This post was last edited by Shutong on 2010-12-21 09:54. When filling gas cylinders with liquefied petroleum gas, it should be filled (). A. Full bottle B. Based on 70% of the volume C. Based on the filling factor D. Based on 80% of the mass. Notes for daily topics: 1) All participants must receive a reward: 5–20 points for the topic post of the day, or more as appropriate (moderators should try to keep scores above 10 points); for correct answers to multiple-choice questions, points are assigned according to the order of the responses: 2nd floor: 10 points, 3rd floor: 9 points, 4th floor: 8 points, 5th floor: 7 points, 6th floor: 6 points, floors 7 and above: 5 points. No points are given for incorrect answers. Doubling of detailed descriptions and sources is available. No scoring will be given for replies on the second day. 2) Please hide your replies; the method for doing this is: http://bbs.hcbbs.com/thread-492556-1-1.html 3) Do not edit your replies after posting them, as replies that are edited will not be rated. 4) Due to the busy work of moderators, they can move posts down on the following day. 5) Please ask the moderators in the Quality section to actively post and rate posts, especially ensuring timely and proper rating of topic posts that were not posted by them. A reminder to all moderators: be sure to mark processed posts as read to avoid redundant work. P; . 9. Spamming posts should not be encouraged; the moderators should merely issue reminders. Points can be deducted, warnings given, and posts deleted in cases of malicious spamming. These are the key measures used in quality-focused areas to encourage the posting of legitimate content. 6) Members are welcome to propose daily topics. These topics should be rich in content and not be limited to multiple-choice questions; more discussion-based content and Q&A posts should be included to encourage participation from other users. 7) Moderators can post at most one post per day (let’s see how popular this will be; if moderators can’t do it and members don’t post either, popularity will surely be low, so this rule needs to be changed).
**It is specified that at room temperature, the liquid volume accounts for approximately 85% of the cylinder’s internal volume; I choose D