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
2024-10-21
0
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/3811126.html
相关试题推荐
HowmanyChineseAmericansarethereintheU.S.today?[br][originaltext]M:P
HowmanyChineseAmericansarethereintheU.S.today?[originaltext]M:Profess
In1938PearlS.BuckbecamethefirstAmericanwoman______theNobelPrizefor
Thescientistshaveabsolutefreedomastowhatresearchtheythinkitbestto_
Whatisthispassagemainlyabout?[br][originaltext]Scientistssayshark
Whatisthispassagemainlyabout?[br][originaltext]Scientistssayshark
Whatisthispassagemainlyabout?[originaltext]Scientistssaysharkshave
Today,theworldwidewebcanbeusedbothtosearchinformationandtomak
Today,theworldwidewebcanbeusedbothtosearchinformationandtomak
Today,theworldwidewebcanbeusedbothtosearchinformationandtomak
随机试题
ThePerfectEssayA)Lookingbackontoomanyyearso
费用支出最高的企业是()。 A.甲企业B.乙企业C.丙企业D.丁企
信息整理就是将所获取的信息资料分门别类地加以(),使之能说明事物的过程或整体。A
投资者在证券交易所买卖证券,是通过委托()来进行的.A.上海证券交易所或深圳证券
直接写药物的正名或制(炙)时,即付盐炙的品种是A.常山 B.没药 C.知
中性粒细胞碱性磷酸酶降低见于( )。A.再生障碍性贫血 B.急性淋巴细胞白血
下列关于我国现行《环境保护法》与《中华人民共和国海洋环境保护法》的适用范围的说法
航向天线基础施工定位要求天线阵()与跑道中心线垂直。A.中心基准点 B.横向
女,56岁。全身麻醉下行右乳癌改良根治术术后2小时。查体:T36.9℃,P8
施工企业在核算产品成本时,()直接计入有关工程成本。A.人工费、材料费、机械使用
最新回复
(
0
)