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
A、It is not comfortable. B、It is difficult to steer. C、It cannot go long distance without recharging. D、Its engine easily overhe
A、It is not comfortable. B、It is difficult to steer. C、It cannot go long distance without recharging. D、Its engine easily overhe
admin
2010-08-04
77
问题
Are electric cars the wave of the future? Automobile manufactures are under pressure to develop cars that do not pollute. One powerful motive is a California law requiring that by the year 2000, 10% of new car sales in the state be so-called "zero emission vehicles". These cars must put no pollution, whatsoever, in the atmosphere.
California is a huge market for the automobile companies. So they are working hard to meet the standards. So far, the electric car seems to be the best alternative. So the big advantage of the electric cars is that they don’t pollute. However, there will be a competition with gas-powered cars and that’s where the weaknesses come out. The big problem is that the batteries that power electric cars weigh a lot relative to the amount of power they deliver. For instance, in one prototype electric car, the batteries weigh 400 kilograms and they provide enough energy to go 250 kilometers before recharging, which takes 8 hours. Compare that to a moderately fuel-efficient conventional car, it can go 600 to 700 kilometers on a tank of gas and refilling takes just minutes.
If there are other drains on the electric cars’ batteries besides the motor, headlights, air-conditioning or heater, its already limited range would be significantly reduced. So, automobile engineers are trying to make more powerful batteries that would increase the cars’ range and make them more attractive to buyers.
选项
A、It is not comfortable.
B、It is difficult to steer.
C、It cannot go long distance without recharging.
D、Its engine easily overheats.
答案
C
解析
转载请注明原文地址:https://kaotiyun.com/show/yGA7777K
0
大学英语四级
相关试题推荐
Theenvironmentofthechemicalagestretchbeyondtheauthorityofanyexistingpoliticalandsocialinstitutions.Mattersoft
Thereisapopularbeliefamongparentsthatschoolsarenolongerinterestinginspelling.Thisis,however,a【S1】______Noscho
Forthepasttwoyears,Ihavebeenworkingonstudents’evaluationofclassroomteaching.Ihavekeptarecordofinformalconv
Oneofthemostfascinatingthingsabouttelevisionisthesizeoftheaudience.Anovelcanbeonthe"bestseller”listwitha
A、Asimplerlifestyle.B、Mysteriousviewsofnature.C、Wildnessandanimals.D、Anexperienceofwildlife.A
Confucianism,thephilosophicalsystemfoundedontheteachingofConfucius,wholivedfrom551BCto479BC,dominatedChinese
A、Policemananddriver.B、Policemanandthief.C、Teacherandpupil.D、Directorandactress.A信息词stop,signaled,payafine说明两人关系是警
A、Playbasketballwithfriendsfromwork.B、Tryoutforthecompanybaseballteam.C、Getinshapeandcompeteinacyclingrace.
Bynowyouknowthat【C1】______yourmoney’sworthisnotjustamatterofluck.Itismoreoftenthe【C2】______of’buyingskill.【
A、He’dliketohavethewindowsopen.B、Herarelyleavesthewindowsopen.C、Hethinkstheairispolluted.D、He’llhelpherclo
随机试题
下列资产负债表日后期间发生的事项中,属于资产负债表日后非词整事项的有()。
世界上最早的通讯社哈瓦斯社创办于()
某妇女,28岁,白带增多半年。妇科检查发现:阴道壁充血,宫颈光滑,白带呈稀薄泡沫状。
拱上结构的砌筑要符合哪些规定?
下列关于混凝土工程计量与支付的说法正确的是()。
“师者,所以传道受业解惑也”,这句话说明了教师的天职是()。
根据我国宪法的规定,下列选项中,连续任职不得超过两届的领导人是()。
Developingfriendlytieswithneighborlycountriesisthepriorityaimofthiscountry’sforeignpolicyandthispolicywillnot
若有以下程序:#include<iostream>usingnamespacestd;classBase{private:inta,b;public:Base(int
考生文件夹下存在一个数据库文件“samp2.accdb”,里面已经设计好“tCourse”、“tGrade”、“tStudent”三个关联表对象和一个空表“tSinfo”,试按以下要求完成设计:创建一个查询,计算每名学生所选课程的学分总和,并依次显示“
最新回复
(
0
)