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
2023-02-20
16
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 grictenabled 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 attractive enough for consumers
C、isn’t as effective as other incentives
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。A与原文内容相反,如果电动车供电挣的钱能满足车子费用,那么它对消费者就应该是很有吸引力的;而D项的remarkably缺乏依据。
转载请注明原文地址:https://kaotiyun.com/show/VuvD777K
0
大学英语六级
相关试题推荐
Beforethewarbrokeout,manypeople________insafeplacespossessionstheycouldnottakewiththem.
Wouldyouriskyourlifeforacountrythatconsideredyouasecond-classcitizen?Wouldyoujoinamilitarythataskedyoutor
Icameacrossanoldcountryguidebooktheotherday.Itlistedallthetradesmenineachvillage,anditwasimpressivetosee
Icameacrossanoldcountryguidebooktheotherday.Itlistedallthetradesmenineachvillage,anditwasimpressivetosee
Becausechemistry’spositionasoneofthenaturalscienceshaslongseemed________,historianshavegenerallytreatedthefound
JaimeJavierRodrigueznotesthatpopularartformsoftenconcealadauntingcomplexity:frequentlywhatappears________becomes
小巷的动人处就是它无比的悠闲。无论谁,只要你到巷里去踟躇一会,你的心情就会如巷尾不波的古井,那是一种和平的静穆,而不是阴森和肃杀。它闹中取静,别有天地,仍是人间。它可能是一条现代的乌衣巷,家家有自己的一本哀乐账,一部兴衰史,可是重门叠户,讳莫如深。夕阳影里
A、Readinghisbook.B、Consultinghertutor.C、SearchingontheInternet.D、WatchingTVprograms.A对话最后女士询问怎么知道自己的学习方式,男士说可以读他的书找
Whenyoutakemedicine,becarefulnotto________thatamountprintedonthebottle,foroverdosemayharmyourhealth.
—Howdidyourjobinterviewgo?—________TheinterviewerseemedinterestedinwhatIsaidwhilehewaslistening,buthedid
随机试题
上海市静安区人民法院在审理一起盗窃案件中,两名被告人均为维吾尔族人(不懂汉语),那么对于法院审判过程中所使用的语言,下列说法错误的是:()
下列关于膀胱三角的叙述,错误的是()
A.丁香B.细辛C.花椒D.小茴香E.高良姜治疗肾阳不足阳痿,应选用
硫柳汞氯化钠
甲有乙、丙和丁三个女儿。甲于2013年1月1日亲笔书写一份遗嘱,写明其全部遗产由乙继承,并签名和注明年月日。同年3月2日,甲又请张律师代书一份遗嘱,写明其全部遗产由丙继承。同年5月3日,甲因病被丁送至医院急救,甲又立口头遗嘱一份,内容是其全部遗产由丁继承,
(2006年)下列哪一选项是关于具体行政行为拘束力的正确理解?①具体行政行为具有不再争议性,相对人不得改变具体行政行为②行政主体非经法定程序不得任意改变或撤销具体行政行为③相对人必须遵守和实际履行具体行政行为规定的义务④具体行政行为在行政复议
在应用分层法时对工程项目质量进行统计分析时,按照合同结构分层可以分为()。
书刊印前制作中图稿检核的具体要求有()等。
关于我国的农民工现象,下列说法错误的是()。
白醋:消毒
最新回复
(
0
)