首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
Widespread adoption of plug-in electric vehicles could dramatically cut greenhouse gas pollution and reduce U.S. dependence on f
Widespread adoption of plug-in electric vehicles could dramatically cut greenhouse gas pollution and reduce U.S. dependence on f
admin
2016-08-29
43
问题
Widespread adoption of plug-in electric vehicles could dramatically cut greenhouse gas pollution and reduce U.S. dependence on foreign oil. But results of an electric-car pilot project presented recently at the annual meeting of the American Association for the Advancement of Science provide added incentive to go electric: Car owners could return unused electricity back to the grid(输电网)and make real money while doing it.
Electric cars need big, powerful batteries to accelerate to highway speeds and travel scores or even several hundred kilometers on a single charge. But because most drivers drive just a few dozen kilometers a day, most of that battery capacity sits unused. To take advantage of that storage capacity, Willett Kempton, director of the University of Delaware’s Center for Carbon-Free Power Integration in Lewes, teamed up with an electric car maker, several utilities, a software company, and PJM Interconnection, one of 10 regional organizations that coordinate and control the U.S. electrical grid.
To ensure that electricity flows steadily and without interruption, the U.S. government requires PJM Interconnection and its counterparts to have reserves of power in case a generator goes down and other electrical reserves to maintain the 60-Hz frequency of alternating current that our appliances and devices are accustomed to dealing with. Today, PJM Interconnection and its counterparts pay conventional power plants to maintain this reserve power. But as renewable energy sources such as wind and solar, which provide energy cleanly but intermittently, come online, these grid operators need to increase their storage capacity to ensure a steady electricity supply. So Kempton and his colleagues set out to provide some of the backup power from a fleet of parked electric cars.
Kempton’s team used an electric car from AC Propulsions, a California car company, which was custom-built to provide electricity back to the grid. They used commercially available software and hardware that companies such as PJM Interconnection use to monitor and control energy flow. In November, the company hooked the grid up to the car, and Kempton’s team’s electric car became the first car in the world to earn its keep as a backup electric power source. At the rates that PJM Interconnection pays today to maintain power reserves, a hooked-in electric car could generate $1,800 a year for its owner.
"I think it’s tremendously exciting," says Kathryn Clay, director of research for the Alliance of Automobile Manufacturers. "The extra dollars an electric car provides will not be enough by themselves to get consumers to adopt grid-enabled vehicles—for that we also need better and less expensive batteries and tax incentives to give the market an encouragement" Nevertheless, "it’s an incentive to push in the right direction."
Kathryn Clay thinks that money made by providing electricity back to the grip _____.
选项
A、can cover the expenses on the car
B、isn’t as effective as other incentives
C、isn’t attractive enough for consumers
D、may increase remarkably in the future
答案
C
解析
原文该句中的not enough表明Kathryn Clay对电动车额外挣的钱抱着不太满意的态度,四个选项中,只有B和C表示不太满意的态度。原文句中提到其他incentives的时候用了also一词,这个词不能表明电动车额外挣的钱和其他incentives之间哪个更重要,据此排除B。
转载请注明原文地址:https://kaotiyun.com/show/hOG7777K
0
大学英语六级
相关试题推荐
A、She’simpressedwiththeticketsellers.B、She’spleasedabouttheman’spurchase.C、She’suncertainaboutthechangeinplans
A、Requiredtextbooks.B、Usedbooks.C、Booksona"suggestedreadings"list.D、Children’sbooks.A
Globalindustrializationhaspouredcarboninthesky,andnowwemustpaytheprice:thenastyclimatechange,withitssinking
Amsterdam,atriumphofresourcefulness,isthebiggestcityintheNetherlands.Spaceisrareand【B1】______inAmsterdam,where
Parentswhoconsidertheirkidstobe"morespecialthanotherchildren"andfeelthatthey"deservesomethingextrainlife"m
A、Chocolates.B、Water.C、Firstaid.D、Bicyclerepairservices.BW对参加者提出的建议当中包括随身带些水。因为虽然中继站也提供水,但是自己带一些可以提供额外的供应,因此选B。
MyViewonNEET1.目前,在中国的农村和城市都有“啃老族’’2.这种现象产生的原因3.如何应对这种现象注:“NEET”是“NotCurrentlyEngagedinEducation,Employmen
早在文字出现之前,就有人发明了风筝,因此关于它的起源有各种各样的说法。中国人拥有制造风筝最基本的材料一一丝绸和竹子,而且中国人是最早用文字记录风筝的。据记载,公元前478年中国的一位哲学家(philosopher)墨子花了三年时间用木头做成了一只会飞的鸟。
A、Theoperationofthenewfaxmachine.B、Theadvantageofthenewtechnology.C、Theinformationreleasedthroughthemailsyste
Manycountrieshaveaholidaytocelebrateworkers’rightsonoraroundMay1,butLabourDayinCanadaiscelebratedonthefir
随机试题
蛋白质变性是由于()
最可能的诊断是纠正低钾血症,最佳选择是
为减少误差,使用吸量管每次应将溶液吸至
《商业银行个人理财业务管理暂行办法》明确规定,个人理财业务是指商业银行为个人客户提供的财务分析、财务规划、投资顾问、资产管理等专业化服务活动。()
甲、乙、丙三人设立A普通合伙企业,约定甲出资4万元,乙出资3万元,丙出资3万元。三人按4:3:3的比例分配和分担合伙损益。A企业成立后,与B公司签订购货合同。保证人为丁。后因A企业无力偿还货款,B公司要求丁承担保证责任,丁以未约定保证形式,只承担一般保证责
盖闻王者莫高于周文,伯者莫高于齐桓,皆待贤人而成名。今天下贤者智能,岂特古之人乎?患在人主不交故也,士奚由进!今吾以天之灵、贤士大夫定有天下,以为一家,欲其长久,世世奉宗庙亡绝也。贤人已与我共平之矣而不与吾共安利之可乎贤士大夫有肯从我游者吾能尊显之。布告天
性格类型是指在一类人身上所共有的性格特征的独特结合。一般而言,性格可以分为()
根据IMF公布的第六版国际收支手册,本国居民在外国所持股票获得的红利收入应被计入的账户是()。
WhatwillSamdo?
Inthespringof1720,whenallofLondonwasclamoringforsharesintheSouthSeacompany,SirIsaacNewtonwasaskedwhathe
最新回复
(
0
)