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
2023-11-23
53
管理
问题
The search for a cheap alternative fuel has led American scientists to study the potential of______. [br]
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、weekly
B、monthly
C、yearly
D、daily
答案
A
解析
分析句子“If they do manage to make the process work…fuel needs for a dozen or so cars.”得出。
转载请注明原文地址:https://tihaiku.com/zcyy/3212881.html
相关试题推荐
HowNativeAmericansdevelopedcornisapuzzling,fornowildcomhaseverbeen
ThefoundingoftheBostonLibraryin1653demonstratetheearlyNorthAmerican
Appliedresearchaimsatsomespecificobjective,suchasthedevelopmentofan
Scientistsfindingoutthattheuniverseisevenlargerandmorecomplexthanan
Americansfinditdifficulttoengageinanyactivityforpurepleasure.We
Americansfinditdifficulttoengageinanyactivityforpurepleasure.We
Americansfinditdifficulttoengageinanyactivityforpurepleasure.We
Losingweightiseasierwhenthereismoneyontheline,U.S.researcherss
Losingweightiseasierwhenthereismoneyontheline,U.S.researcherss
Losingweightiseasierwhenthereismoneyontheline,U.S.researcherss
随机试题
Whatwillthespireonthetopofthenewbuildingsuggest?[br][originaltext]
IfIhadn’tgonetodowntownAthenslastSunday,I____________bumpedintoano
Itisallverywelltoblametrafficjams,thecostofpetrolandthequick
一般主张脾切除的年龄要求是A.>2岁 B.>4岁 C.>6岁 D.青春期之
下列属于社区工作调中准备阶段的工作重点的是()A.确定主要任务和行动方案
胃管插入胃内的长度是A.60mm左右 B.60cm C.45mm~50mm
下列关于税法原则的表述中,正确的有()。A.税收法定原则是税法基本原则中的核心
当年形成的会计档案在会计年度终了后,编制成册之后,必须移交本单位的档案部门保管。
2007年7月15日,某亚麻厂正在生产的梳麻车间、前纺车间和准备车间的联合厂房突
患儿3岁,因发热呕吐15天住院。查体:嗜睡状,营养差,颈抵抗(+),右侧鼻唇沟变
最新回复
(
0
)