首页
登录
职称英语
What is the talk’ mainly about? [originaltext] Are electric cars the way of
What is the talk’ mainly about? [originaltext] Are electric cars the way of
游客
2024-10-28
46
管理
问题
What is the talk’ mainly about?
Are electric cars the way of the future? Automobile manufactures are under pressure to develop ca rs that do not pollute. One powerful motive is a California law requiring that by the year 2000 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.
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. 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、Automobile safety.
B、Increasing fuel efficiency.
C、California’s pollution laws.
D、Electric-powered cars.
答案
B
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3820570.html
相关试题推荐
WhodidPresidentBushmeetwith?[br][originaltext]AftermeetingwithDefe
WhodidPresidentBushmeetwith?[originaltext]AftermeetingwithDefenseSe
Whatisthetalkmainlyabout?[br][originaltext]I’mgoingtointroduce
Whatisthetalkmainlyabout?[originaltext]I’mgoingtointroducetwocu
Whatisthetalk’mainlyabout?[br][originaltext]Areelectriccarsthew
Whatistherelationshipbetweenthespeakers?[br][originaltext]M:Hi,Sue.
Whatistherelationshipbetweenthespeakers?[br][originaltext]M:Hi,Sue.
Whatistherelationshipbetweenthespeakers?[br][originaltext]M:Hi,Sue.
WhatplaguearesomeAfricancountriesfacing?[br][originaltext]AUnited
Whatshouldbeblamedforthecrash?[br][originaltext]Sudan’sforeignmi
随机试题
•Readthearticlebelowaboutacompany.•Aresentences16-22ontheopposit
Theflatwherewelive________threeroomsonly.A、iscomprisedofB、ismadeof
早期“程序教学”的设计所依据的心理学原理是( )。A.行为主义 B.认知主义
信用利差是用以向投资者()的、高于无风险利率的利差。A.补偿利率波动风险
表12016~2021年我国工业大数据市场规模增长及预测 表2按
监控主机负责站内数据的采集、处理,应具备站内设备的()功能。(A)一键顺控指令
设备在什么情形下需提前或尽快安排停电试验()。(A)巡检中发现有异常,此异常
(2021年上半年真题)某公办幼儿园园长在招生工作中徇私舞弊,尚未构成犯罪,依据
以下关于基金资产估值,表述错误的是()。A:基金管理人每个工作日对基金资产估值
关于金本位制的说法,错误的是()。A.汇率单纯由货币的含金量决定 B.货币供
最新回复
(
0
)