职称英语 (12)
最新试题
We almost ran intoa Rolls-Royce that pulled out in front of us without signaling（）
02-21
A lot of people could fall ill after drinking contaminatedwater（）
02-21
They are concerned for the fate of the forest and the Indians who dwellin it（）
02-21
He was not eligiblefor the examination because he was over age（）
02-21
The latest censusis encouraging（）
02-21
Even sensible men do absurdthings（）
02-21
It is absurdto predict that the sun will not rise tomorrow（）
02-21
The conclusion can be deducedfrom the premises（）
02-06
It is important to learn to communicate.
05-09
She moves from one exotic location to another.
05-09
热门试题
He will consolidate his power.
The air-conditioners are tested for defects before leaving the factory.
His breathing was steady.
共用题干
Obtaining Drinking Water from Air HumidityNot a plant to be seen,the desert ground is too dry.But the air contains water,and research scientistshave found a. __________(51)of obtaining drinking water from air humidity."The process we have developed is based exclusively on renewable energy sources_________(52)thermal solar collectors andphotovoltaic（光电的）cells , ________( 53 ) makes this method completely energy-autonomous. It will ____________( 54 ) function in regions where there is no electrical infrastructure（基础设施）,"says Siegfried Egner,head of the research team. The principle of the_________(55)is as follows:hygroscopic（吸湿的） brine（盐水）一saline（含盐的）solution which absorbs moisture一runs down a tower-shaped unit and absorbs water from the air. It is then sucked__________(56)a tank a few meters off the ground in which a vacuum prevails.Energy from solar collectors_________(57)up the brine,which is diluted by the water it has__________ (58).Because of the vacuum,the boiling point of the liquid is lower than it would be under__________(59) atmospheric pressure. The evaporated (蒸发的）, non-saline water is condensed and runs down through a completely filled tube in a controlled manner. The gravity of this water column_______(60)produces the vacuum and so a vacuum pump is not needed.The reconcentrated brine________(61)down the tower surface again to absorb moisture from the air."The concept is suitable for various water________(62).Single一person units and plantssupplying water to entire hotels are conceivable,"says Egner. Prototypes have been built for_______(63)system components一air moisture absorption and vacuum evaporation一and the research scientistshave already __________(64)their interplay on a laboratory scale.In a further ________(65)the re- searchers intend to develop a demonstration facility.
Reading the job ad,he wondered whether he was eligible to apply for it.
Her new boyfriend has omitted to tell her that he had married once.
From my standpoint ,this thing is just ridiculous.
They postulated a 500-year lifespan for a plastic container.
Gambling is lawful in Nevada.
Steep stairs can present a particular hazard to old people.
