首页
登录
职称英语
The search for a cheap alternative fuel has led American scientists to study the
The search for a cheap alternative fuel has led American scientists to study the
游客
2024-10-24
52
管理
问题
The search for a cheap alternative fuel has led American scientists to study the potential of
The search for a cheap alternative fuel to take the place of petroleum has led American scientists to study the potential of pond water. They are interested in a green scum known as algae that forms on the surface of stagnant pools. Helen Briggs reports from Washington: "Scientists have found a way of harnessing the natural ability of algae under certain conditions to make pure hydrogen gas from sunlight and water." The researches based in California and Colorado describe the new discovery as the equivalent of striking oil. But there are still big obstacles to be overcome. The technique’ s only been tried on a small scale in a laboratory and to be commercially viable, use of hydrogen and gas must be increased by a factor of ten. If they do manage to make the process work, perhaps in 20 years’ time, researchers say a small pond of algae could produce enough hydrogen gas to meet the weekly fuel needs for a dozen or so cars.
选项
A、sunlight
B、pure hydrogen gas
C、pond water
D、small stream
答案
C
解析
抓听住句子“The search for a cheap alternative... study the potential of pond water.”。
转载请注明原文地址:https://tihaiku.com/zcyy/3815983.html
相关试题推荐
Accordingtothenews,theAmericanspaceshuttleColumbiafailed[br][origina
EverypeoplehasitsownspecialwordsandexpressionsliketheAmericanex
What’sthechangeinAmericanfamilyinthe21century?[br][originaltext]
What’sthechangeinAmericanfamilyinthe21century?[br][originaltext]
What’sthechangeinAmericanfamilyinthe21century?[originaltext]Atth
HowmanyChineseAmericansarethereintheU.S.today?[br][originaltext]M:P
HowmanyChineseAmericansarethereintheU.S.today?[br][originaltext]M:P
HowmanyChineseAmericansarethereintheU.S.today?[originaltext]M:Profess
ThesearchforacheapalternativefuelhasledAmericanscientiststostudythe
AgeismAmericansocietyhasbeende
随机试题
What’sthethemeofeachcontinentbasedontheroomsoftheclubhouse?ChooseS
DistributionofSeaweedP1:Vegetationoftheseaismoreprimitiveontheevolu
Ecologistsstudyhowmillionsofspeciessharetheworld,ratherthantakeo
Hekeptthenews______himselfwithouttellinganyoneaboutit.A、toB、withC、fr
视网膜电图(ERG)早期诊断最有意义的疾病是A.糖尿病视网膜病变 B.视网膜色
我国规范规定,()的集料选用水煮法,()的集料选用水浸法.A.大于1
下述哪项不是内分泌疾病功能诊断A.毒性弥漫性甲状腺肿 B.黏液性水肿 C.桥
创设化学教学情境最丰富的情景素材是()。A.实物 B.化学实验 C.投影
D解题指导:图形都是由两个不同形状的小图组成,故答案为D。
费用是指企业为销售产品、提供服务而发生的( )。A.经济利益的总流出 B.经济
最新回复
(
0
)