Each year, millions of people in
Bangladesh drink ground water that has been polluted by naturally high levels of
arsenic poison. Finding safe drinking water in that country can be a problem.
However, International Development Enterprises has a low-cost answer. This
nongovernmental organization has developed technology to harvest
rainwater. People around the world have been harvesting rainwater for centuries. It is a safe, dependable source of drinking water. Unlike ground water, rainwater contains no minerals or salts and is free of chemical treatments. Best of all, it is free. The rainwater harvesting system created by International Development Enterprises uses pipes to collect water from the tops of buildings. The pipes stretch from the buildings to a two-meter tall storage tank made of metal. At the top of the tank is a so-called "first-flush" A. ground water B. rainwater C. drinking water D. fresh water [单项选择]客户频繁地以()期货合约为标的,在以某一价位开仓的同时,在相同或()价位、等量或接近等量反向开仓后平仓出局,支取资金的情形,作为可疑交易进行报告。正确答案应为()
A. 不同;相同 B. 同一种;相同 C. 同一种;完全不同 D. 同一种;大致相同 [单项选择]下列除哪项外,均可出现周围性呕吐
A. 洋地黄中毒 B. 急性胃炎 C. 胃穿孔 D. 胆囊炎 E. 咽部受激惹 [单选题] 车辆在弯道上行驶,由于弯道( )必须减速。[1分]
A.路况平坦 B.视线不良 C.车辆失稳 D.发生侧滑 [多选题]中国人民银行应当将纪念币的主题、面额、图案、发行数量、()等予以公告。
A.材质; B.式样; C.规格; D.发行时间。 [判断题]滑车可以拴挂在不牢固的结构物上。
A.正确 B.错误 [单项选择]贮藏苗木时窖温应控制在:()。
A. ±3℃ B. 、0~5℃ C. 5~10℃ D. 10℃以上 [单选题] “和平统一、一国两制”构想的核心是
A.A:一个中国 B.B:两种制度 C.C:高度自治 D.D:繁荣稳定 [单选题]对()实行管理责任制,推广应用节能技术,节约水、电、热、煤、油、气,搞好环境保护和造林绿化,建设生态文明营区
A.A、营房营具、装备器材、生活设施 B.B、装备器材、生活设施 C.C、营房营具、生活设施 D.D、营房营具、装备器材 [单项选择] Is This A Senseless Notion
"There is a senseless notion that children grow up and leave home when they are 18 , and the truth is far from that," sociologist Larry Bumpass of the University of Wisconsin says. Today, unexpected numbers of young adults are living with their parents. " There is a major shift in the middle class," declares sociologist Allan Schnailberg of Northwestern University, whose son, 19, moved back after an absence of eight months.
Analysis cite a variety of reasons for this return to the nest. The marriage age is rising, a condition that makes home and its pleasantness particularly attractive to young people. A high divorce rate and a declining remarriage rate are making economically pressed and emotionally hurt survivors back to parental shelters. For some, the expense of an away-from home college education has become so excessively great that many students now attend local schools. Even after graduation, young people find thei
A. They should adjust themselves to sharing the family expenses. B. Children should leave their parents when they are grown-up. C. Adult children should visit their parents from time to time. D. Parents should support their adult children when they are in trouble. [单项选择]热力学第()定律是能量转换与能量守恒定律在热力学上的应用。
A. 零 B. 一 C. 二 D. 三 [判断题]任何情况下吊臂下方不得有人,但吊物可从人的上方通过。
A.正确 B.错误 [判断题]热量传播方式有热传导、热辐射、热对流三种。
[单选题]作业人员工作中正常活动范围与35kV设备带电部分的安全距离小于()m时,设备应停电。
A.1.5 B.1 C.0.75 D.0.6 [单选题]夜间巡线应携带足够的()。
A.干粮 B.照明用具 C.急救药品 D.防身器材 我来回答: 提交
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