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
35
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
TheimpactofThoreau’s"OntheDutyofCivilDisobedience"mightnothavebeen
A—accountingsystemJ—fixedassetsB—financialforecastK—netprofitC—bala
Everylivingthinghaswhatscientistscallabiologicalclockthatcontrols
某投资项目需要3年建成,从明年开始每年年初投入建设资金45万元。建成投产之时,需
唯物辩证法认为,事物的运动、变化、发展都离不开联系。这主要表现在()。 A.事
以下因素影响龈下菌斑的细菌组成,除外()A.龈沟和牙周袋的解剖条件
Thechangeinthatvillagewasmiraculou
(2016年真题)城市规划中,城市绿地范围的控制线是()。A.红线 B.黄线
Passage2 OneeveninginFebruary2007,
某航运公司2021年拥有机动船4艘,每艘净吨位为3000吨;拖船1艘,发动机功率
最新回复
(
0
)