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
51
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
Thispassagegivesageneraldescriptionofwhyrecessionsoccurandhowtheyma
AfricanEconomicGrowthA)GoodnewsforAfrica,saythe
【B1】[br]【B15】A、immediatelyB、artificiallyC、consistentlyD、automaticallyD词义辨析
冠心病心绞痛发作的典型部位是()。A.胸骨体下段之后 B.心前区 C
关于常见的六大缆机,下列说法错误的是( )。A.在选用机型时应优先考虑平移式缆
下列不符合急性肾炎的临床表现的是A.血尿 B.凹陷性水肿 C.严重循环充血
下列关于五四运动的说法正确的是( )。A.近代中国第一次彻底的反帝反封建的爱国
在我国的债券回购市场上,回购期限是( )。A.1个月以内 B.3个月以内
2011年7月5日,某公司高经理与员工在饭店喝酒聚餐后表示:别开车了,“酒驾”已
保持廉洁主要靠会计人员的()。A、舆论压力 B、觉悟 C、良知 D、道德水
最新回复
(
0
)