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
2023-11-19
78
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/3201421.html
相关试题推荐
AllAmericansareatleastvaguely【C1】______withtheplightoftheAmerica
AllAmericansareatleastvaguely【C1】______withtheplightoftheAmerica
AllAmericansareatleastvaguely【C1】______withtheplightoftheAmerica
AllAmericansareatleastvaguely【C1】______withtheplightoftheAmerica
AllAmericansareatleastvaguely【C1】______withtheplightoftheAmerica
AllAmericansareatleastvaguely【C1】______withtheplightoftheAmerica
AllAmericansareatleastvaguely【C1】______withtheplightoftheAmerica
AllAmericansareatleastvaguely【C1】______withtheplightoftheAmerica
AllAmericansareatleastvaguely【C1】______withtheplightoftheAmerica
AllAmericansareatleastvaguely【C1】______withtheplightoftheAmerica
随机试题
WriteinyourANSWERSHEETONEanoteofabout50-60wordstoafriendofyour
Shynessisthecauseofmuchunhappinessforagreatmanypeople.Shypeople
Thedestructionofournaturalresourcesandcontaminationofourfoodsuppl
Tolearnwithsuccessisnotaverydifficulttaskofsomefundamentalprin
Forthispart,youareallowed30minutestowriteashortessayonsocialskill
成对的脑颅骨()A.额骨 B.顶骨 C.枕骨 D.蝶骨 E.
某小儿,5个月,接种百白破混合疫苗一天后,体温37.1℃,上臂外侧出现红、肿、热
在初步可行性研究中,项目投资和成本费用可主要采用相对粗略的()。A.分类估算法B
在分期付款买卖合同中,分期付款的买受人未支付到期价款的金额达到全部价款的()时,
(2019年真题)根据《水工建筑物岩石基础开挖工程施工技术规范》(SL47-19
最新回复
(
0
)