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
2023-11-21
82
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/3206002.html
相关试题推荐
WhatplaguearesomeAfricancountriesfacing?[br][originaltext]AUnited
WhatplaguearesomeAfricancountriesfacing?[br][originaltext]AUnited
ScientistsareinterestedinMarsbecause_______________.[br][originaltext]
ScientistsareinterestedinMarsbecause_______________.[br][originaltext]
ScientistsareinterestedinMarsbecause_______________.[br][originaltext]
Wheredoesthemanwork?[br][originaltext]F:Henry,Christmasiscoming.Don’
Wheredoesthemanwork?[br][originaltext]F:Henry,Christmasiscoming.Don’
Wheredoesthemanwork?[br][originaltext]F:Henry,Christmasiscoming.Don’
Howmuchofyourcountry’selectricalsupplyis______fromwaterpower?A、deduced
______politicianswerekilledintheterroristattack.[originaltext]Armenia
随机试题
Whodoyouthinkthespeakeris?[br][originaltext]WelcometoYellowstoneNati
[originaltext]M:Thewatchlooksniceonme,butthepriceisnotveryappealin
Thereexistsasocialandculturaldisconnectionbetweenjournalistsandth
波在线路上传播,当末端短路时,以下关于反射描述正确的是()。A.电流为0,电压
在手背侧,当第2、第3掌骨间,掌指关节后约0.5寸处的腧穴善于治疗A.胸痛 B
慢性阻塞性肺疾病阳虚水泛证治疗宜首选A.补肺汤加减 B.小青龙汤加减 C.补
可以发行公募债券的主体不包括()。A.政府机构 B.地方公共团体 C.符合
基金募集期限届满,不能满足规定条件成立的,( )应当承担基金发起设立失败的责任
豆蔻性状鉴别特征有A.类球形 B.表面棕褐色 C.种子不规则多面体 D.气
依据《通用安装工程工程量计算规范》GB50856-2013的规定,电气工程安装过
最新回复
(
0
)