问题 单项选择题

某路基换填施工,换填深度为2m,地下水位为地面以下1.8~2.0m,含水层以下为非透水层,为降低和拦截地下水,在换填边界处宜设置( )

A.渗井
B.急流槽
C.蒸发池
D.填石渗沟

答案

参考答案:C

解析: 蒸发池的施工应符合下列规定:(1)用取土坑作蒸发池时与路基坡脚间的距离不应小于5~10m。面积较大的蒸发池至路堤坡脚的距离不得小于20m,坑内水面应低于路基边缘至少0.6m。(2)坑底部应做成两侧边缘向中部倾斜0.5%的横坡。取土坑出入口应与所连接的排水沟或排水通道平顺连接。当出口为天然沟谷时,应妥善导入沟谷内,不得形成漫流,必要时予以加固。(3)蒸发池的容量不宜超过200~300m3,蓄水深度不应大干1.5~2.0m。池周围可用土埂围护,防止其他水流入池中。(4)蒸发池的设置不应使附近地区泥沼化及影响当地环境卫生。

单项选择题

People are indulging in an illusion whenever they find themselves explaining at a cocktail(鸡尾酒) party, say, that they are "in computers," or "in telecommunications," or "in electronic funds transfer". The implication is that they are part of the high-tech world. Just between us, they usually aren’t. The researchers who made fundamental breakthroughs in those areas are in a high-tech business. The rest of us are()of their work. We use computers and other new technology components to develop our products or to organize our affairs. Because we go about this work in teams and projects and other tightly knit working groups(紧密联系在一起的工作小组), we are mostly in the human communication business. Our successes stem from good human interactions by all participants in the effort, and our failures stem from poor human interactions. The main reason we tend to focus on the()rather than the human side of the work is not because it’s more(), but because it’s easier to do. Getting the new disk drive installed is positively trivial compared to figuring out why Horace is in a blue funk(恐惧) or why Susan is dissatisfied with the company after only a few months. Human interactions are complicated and never very crisp(干脆的,干净利落的) and clean in their effects, but they matter more than any other aspect of the work. If you find yourself concentrating on the()rather than the(), you’re like the vaudeville character(杂耍人物) who loses his keys on a dark street and looks for them on the adjacent street because, as he explains, "The light is better there!".

The rest of us are()of their work.

A.creators

B.innovators

C.appliers

D.inventors

单项选择题