节约用水演讲稿PPT.ppt

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1、Saving Water,The world is not only hungry,but also thirsty for water.This may seem strange to you,since nearly 75%of the earths surface is covered with water.But about 97%of this huge amount is sea water,or salt water.Man can only drink and use the other 3%-the fresh water that comes from rivers,lak

2、es,underground,and other sources.And we cannot even use all of that,because some of it is in the form of icebergs and glaciers.Even worse,some of it has been polluted.,However,as things stand today,this small amount of fresh water,which is constantly being replaced by rainfall,is still enough for us

3、.But our need for water is increasing rapidly-almost day by day.Only if we take steps to deal with this problem now can we avoid a severe worldwide water shortage later on.A limited water supply would have a bad effect on agriculture and industry.Let me give you just one small exampie of how necessa

4、ry water is to industry.Did you know that to produce a single ton of steel,it takes about 91,000 liters of water?,We all have to learn how to stop wasting our precious water.One of the first steps we should take is to develop ways of reusing it.Experiments have already been done in this field,but on

5、ly on a small scale.For us,the systems are as important as the spacecraft.,Water is Precious!,Imagine one day you are out of water!,Our countrys city,specially the big or media-sized cities,the water resources short is also a poverty-stricken question which the people face.Our country average per pe

6、rson water resources possessive amount is only the world average level 1/4,but the water consumption is very actually huge.,Looks like Beijings average per person water consumption is world average level 4 times.Therefore,do not think that economize on water and you irrelevant,water drops main item

7、one day may leave out 70 liters water,one year is 25 tons water.,Water is Money!save on water,when washes the hands,washes with the trough compared to uses the high tide class a method more economical water,the wash vegetables fruit or washes when the bowl to be also same,is opening the water cock u

8、ninterrupted flushing non-current expense water,the interrupted flushing can save the water.Has used Shui Cun gets down may also use once more.in the family washers water consumption is big,to save water,the Manufacturer and the scientific researchers under fully time,must,in the guarantee washes un

9、der the clean clothes premise economize on water as far as possible.the this kind of inclines modelling is not for artistic or proposes something new and different,10 degree incline designs are innate it the truth.After washing clothes the tube crooked 10 degrees,its water level relatively deepened,

10、could achieve the great water volume the scrubbing effect.Therefore it saves the water.the washer establishes the procedure is a wash generally,two rinses,the water mainl,In ours life,such crack is not rare.Besides acquires the saving water consciousness,but also what know-how has to let us be able

11、to save the water?so long as we pay attention to the intravenous drip minor matter actually,saving water is very easy to achieve.,Likely on elimination tableware when overweight greasy dirt do not wash directly with the detergent,uses paper cleaning first,then cleans again,like this may save more than 50%waters used.,Thank you!,

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