[简答题]

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. More over, 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, LIN experts expect demands to double in the next 25 years. (61)This will coincide with increasing population and industrialization and the attendant risk of factory and human waste further contaminating rivers, lakes and ground water. So, is there any hope of a solution The answer, fortunately, is that the problem is being tackled.
(62) Specialists in many countries are dev

最新试题

• ●    [单选题]【MM】 高压加热器内水的加热过程可以看作是 ( )。
• ●    [单选题]允许速度小于160km/h的线路,铝热焊缝距轨枕边不得小于( )。
• ●    施工招标资格预审的主要内容包括（）。
• ●    [单选题]我国自主开发的CPU被命名为( ).
• ●    下列关于甲状腺癌的临床表现中，不包括（）
• ●    工程建设管理信息化的直接作用在于提高( )。