首页
登录
职称英语
[originaltext] Are electric cars the way of the future? Automobile manufactu
[originaltext] Are electric cars the way of the future? Automobile manufactu
游客
2024-01-29
54
管理
问题
Are electric cars the way 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 2020 ten percent of new car sells in the state be so called zero-emission vehicles. These cars must put no pollutants whatsoever into the atmosphere.
California is a huge market for the automobile companies, so they are working hard to meet these standards. So far the electric car seems to be the best alternative. So the big advantage of electric cars is that they don’t pollute. However they will be in competition with gas-powered cars and that’s where the weaknesses come out. [24]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 weighed 400 kilograms. And they provide enough energy to go 250 kilometers before recharging, which takes eight 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 an electric car’s batteries besides the motor, headlights, air-conditioning or a heater, its already limited range will be significantly reduced. [25] So automobile engineers are trying to make more powerful batteries that would increase the cars’ range and make them more attractive to buyers.
23 Why does the electric car seem to be the best alternative so far?
24 What is the big problem with an electric car?
25 What are the automobile engineers trying to do?
选项
A、Its battery is not powerful enough.
B、Its battery is of enormous size.
C、It costs too much money.
D、It breaks down easily.
答案
A
解析
短文提到,电动汽车一个大问题在于,相对于其所能供应的电能而言,电池的重量偏高。言外之意是,电池的供电能力不够强大,故A正确。
转载请注明原文地址:https://tihaiku.com/zcyy/3403281.html
相关试题推荐
Arewereadyforthelibraryofthefuture?A)Librarianstodaywilltel
Arewereadyforthelibraryofthefuture?A)Librarianstodaywilltel
Arewereadyforthelibraryofthefuture?A)Librarianstodaywilltel
Arewereadyforthelibraryofthefuture?A)Librarianstodaywilltel
Arewereadyforthelibraryofthefuture?A)Librarianstodaywilltel
Somepessimisticexpertsfeelthattheautomobileisboundtofallintodisu
Somepessimisticexpertsfeelthattheautomobileisboundtofallintodisu
[originaltext]Anewstudyfoundthat43percentofboyandgirlparticipant
[originaltext]Anewstudyfoundthat43percentofboyandgirlparticipant
[originaltext]Peoplewithbiggerbrainstendtoscorehigheronstandardte
随机试题
Manyyearsago,KarlBenzdevelopedacar,butbeforehecouldshowittothe
America’sWesternMigration1.AfterAmericadeclaredinde
Ataroundageoffive,everychildhastomakethe【C1】______fromhometosch
Officialhealthadvicethatsaidhouseholdchoreshelpkeepyouactivehasb
Directions:Forthispart,youareallowedthirtyminutestowriteacomposition
患者,男性,30岁,因天气寒冷,于睡前将火炉移入卧室内取暖,清晨邻居发现其昏睡不
我国《公司法》规定,股份有限公司向发起人、法人发行的股票应当为()。A:记名股票
我国商业银行资产负债比例管理指标中,关于资产流动性比例指标说法正确的是()。A.
下列各项中,不属于消费税征税范围的有()。A.施工状态下挥发性有机物含量低于4
银行承兑汇票的承兑银行,应当按照票面金额向出票人收取()的手续费。A:千分之一
最新回复
(
0
)