在双代号时标网络计划中,不能从图上直接识别的参数为()。
A.计算工期
B.总时差
C.自由时差
D.持续时间
参考答案:B
Experts predict that China’s healthcare market will have an annual growth of 6 to 8 per cent in the next few years, making it one of the potentially most prosperous. In Shanghai, annual medical expenditure is estimated to be 16 billion yuan (U. S. 93 billion). With an increasingly (31) population, the growing consumption power and longer life (32) of local residents, the medical market bas great opportunities. However, limited medical resources cannot meet people’s needs (33) financial deficits in State-owned hospitals. (34) , there is room for a range of different medical organizations. As is the case with many State-owned enterprises, public hospitals in the past half century have learned a lot of bad habits: (35) management, over-staffing and bureaucratic operating procedures. Being a member of World Trade Organization (WTO), China has to (36) its promise to open the health industry to foreign capital in coming years. By then, public hospitals will be facing fierce competition from Western giants they have never prepared for. So it’s quite urgent (37) them to learn how to operate as an enterprise and how to survive in the competitive market economy of the future. As a (38) , the healthcare sector was first opened to domestic private investors. Since the first private hospital opened in 1999, private investors from Shenzhen, Sichuan and Zhejiang provinces have been scrambling to enter Shanghai. (39) show that about 20 private hospitals have been set up in the city, although this number, (40) with more than 500 public hospitals, is still quite low.
A.due to
B.due in
C.due
D.due of
某一级建筑基坑位于黏土场地,地表水平,有满布荷载,强度为q=40kPa,黏土的内聚力c=10kPa,内摩擦角ψ=18°,重度γ=19kN/m3,基坑侧壁直立,深度为7.0m,采用地下边续墙支护结构,在3.0m处设一层锚杆,锚杆倾角为20°,间距为2.0m,锚固体直径为0.25m,锚固体与土体间的黏结强度为80kPa,钢筋抗拉强度设计值为210MPa,按《建筑基坑支护技术规范》计算。
锚杆钢筋截面积不宜小于( )。
A. 2500mm2 B. 2800mm2 C. 3000mm2 D. 3050mm2