Because of the vacuum, the boiling point of the liquid is 8 than it would be under normal atmospheric pressure. This effect is known from the mountains: as the atmospheric pressure 9 is lower than in the valley, water boils at temperatures 10 below 100℃. The evaporated, non-saline water is condensed and runs down through a completely filled tube in a controlled manner. The gravity of this water column continuously produces the vacuum and so a vacuum pump is not needed. The reconcentrated brine runs down the tower surface 11 to absorb moisture from the air.
The concept is suitable for various water 12 Single-person units and plants 13 water to entire hotels are conceivable, says Egner. Prototypes have been built for both sys-tem components- air moisture absorption and vacuum evaporation-and the research scientists have already 14 their interplay on a laboratory scale. In a further step the researchers in-tend to develop a demonstration 15 .
练习:
1. A dry B dirty C sandy D clean
2. A path B way C channel D road
3. A oil B wood C coal D solar
4. A when B what . C where D who
5. A promise B progress C prospect D process
6. A of B with C off D below
7. A absorbed B attracted C allowed D affected
8. A wetter B hotter C lighter D lower
【2015年职称英语理工类完形填空一级重点文章(3)】相关文章:
★ 2015年职称英语(理工类)教材完形填空文章及练习(3)
最新
2016-03-01
2016-03-01
2016-03-01
2016-03-01
2016-03-01
2016-03-01