单选题
发布日期:2022-06-28
孔隙率
表观密度
堆积密度
密度
级配是集料各级粒径颗粒的分配情况,可通过筛析试验确定。级配参数: 1)分计筛余百分率:某号筛上的筛余量占试样总质量的百分率; 2)累计筛余百分率:某号筛的分计筛余百分率和大于某号筛的各筛分计筛余百分率的总和; 3)通过百分率:通过某号筛的质量占试样总质量的百分率,即100与某号筛的累计筛余之差。
优劣,汉语词语,拼音yōu liè,释义是用来表示一件事物好坏的意思。
也可是一个汉语词语,拼音是yě kě,意思是大,元代任同一官职的数人,为首的在官名前加“也可”二字,表示第一。出自《十驾斋养新录·也可太傅》。
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Directions:You are asked to write in no less than about 160 words about the title of Is It a Good Idea for Poor Students To Live Separately? And you should base your composition on the information given in English below: At the beginning of this new semester, a university in Jiangsu Province has found a visible way to help some of its poorer students: It has build some special dormitories for poor students. More than 100 of the school's relatively poor students are now housed in these buildings. Besides simple facilities, the major difference between these and other dormitories is that the housing costs 500 yuan a year, but in other residence halls students have to pay 1600 yuan. 1.Do you think this is a good idea to help the poorer students? 2.Give at least two reasons to support you argument. 3.Give some suggestions as to how to solve the problem.