These two guys found an affordable way to turn salt water into drinkable water using the power of ocean wavesTess Danielson
Heating seems very good for small, but it doesn't make much water at a time. However, the quality of fresh water is not so good. But the factory is easy to build and costs little. That's why people in many dry places still use this way! Different places may need different methods....
In seawater, boron exists as electrically neutral boric acid, so it passes through reverse osmosis membranes that typically remove salt by repelling electrically charged atoms and molecules called ions. To get around this problem, desalination plants normally add a base to their treated water, which ...
与前边的salt water对应,这里应当指饮用水,drinking water意为饮用水,故选B。6. 本题考查形容词辨析。这里表示随着全球温度升高,水资源匮乏会变得更糟,get作系动词,后接形容词作表语,worse意为更糟的,故选D。7. 本题考查固定搭配。compare ... with ... 为固定搭配意为”把...和...相比较“,故选A。8...
1.根据Many places in the world need more fresh water. Every country is trying to find ways to turn salt water into fresh.可知淡水在每个国家都很重要.故选B.2.根据Symi's way seems very good for small hot places. It does not make much water at a time. But the factory is easy to ...
So after years of diminishing water supplies made even worse by the second-most severe drought in state history, some communities are resorting to a plan that might have seemed absurd a generation ago: turning sewage into drinking water.
【题目】T oturn seawater into fresh water, we need to remove the salt inseawater, that is, to desalin ate(使...脱盐)seawater. T he problem is that the desalination of water requires alot of ener gy. Salt dissolves very easily in water, formin g strongchemical bonds, and those bonds...
阅读理解 Many places in the world need more fresh water. Every country is trying to find ways to turn salt water into fresh. Why aren't there many factories like the Symi factory? In some places, the sun isn't h
根据“but in some areas this is the only way to get clean drinking wate”可知,这些地方几乎没有淡水,修饰不可数名词water,应用little,故选D。 (9)题详解: 句意:盐被留下,然后干净的水被带走。 behind在后面;alone独自;off离开;out出去。根据“This is done by freezing or boiling it. The salt ...
Many places in the world need more fresh water.Every country is trying to find ways to turn salt water into fresh water. Why aren’t there many factories like the Symi factory? In some places the sun is not hot enough or it does not shine every day. In such places other ways of hea...