[多项选择]下列选项中，关于临边、洞口、交叉、高处作业防护的设置，叙述正确的是( )。
A. 楼板、屋面、阳台等临边防护需要用密目式安全网全封闭，作业层另加两边防护栏杆和15cm高的踢脚板
B. 通道口防护需要设防护棚，防护棚应为不薄于5cm厚的木板或两道相距50cm的竹笆。两侧应沿栏杆架用密目式安全网封闭
C. 预留洞口防护需要用木板全封闭；短边超过1.5m长的洞口，除封闭外四周还应设有防护栏杆
D. 垂直方向交叉作业防护需要设置防护隔离棚或其他设施
E. 高空作业防护需要有悬挂安全带的悬索或其他设施；有操作平台；有上下的梯子或其他形式的通道

Whether trying to live with the depressing spectacle of drought or battling rampaging floods or suffering with a debilitating disease caused by contaminated drinking supplies, people in almost every corner of the world have had their problems with the vagaries of water. Although water covers much of our planet, more than 97% is in the oceans. Another 2% is unusable ice. Moreover, much of the remainder is polluted. So much for the supposed abundance! Developed and developing countries alike are now talking about a crisis.
What of the future Will water needs reach a peak Unhappily, UN experts expect demands to double in the next 25 years. 61. {{U}}This will coincide with increasing population and industrialization and the attendant risk of factory and human waste further contaminating rivers, lakes and ground water.{{/U}} So, is there any hope of a solution The answer, fortunately, is that the problem is being tackled.
62. {{U}}Special