首页
登录
职称英语
[originaltext] Are electric cars the wave of the future? Automobile manufact
[originaltext] Are electric cars the wave of the future? Automobile manufact
游客
2023-07-24
16
管理
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、They are cheaper.
B、They do not pollute as much.
C、They are simpler to drive.
D、They are faster.
答案
B
解析
转载请注明原文地址:https://www.tihaiku.com/zcyy/2865144.html
相关试题推荐
[originaltext]Researchersdonotknowwhypeoplethinksomecoloursarewar
[originaltext]Researchersdonotknowwhypeoplethinksomecoloursarewar
[originaltext]Today,cigarettesmokingisawidespreadhabit.Aboutforty-t
[originaltext]M:Didyouknowthatastronautshavemadecommercialproductsin
[originaltext]M:Didyouknowthatastronautshavemadecommercialproductsin
[originaltext]M:Let’sgoforapicnicthisweekend.W:Ican’tI’m’afraid.M
[originaltext]M:Let’sgoforapicnicthisweekend.W:Ican’tI’m’afraid.M
[originaltext]M:Let’sgoforapicnicthisweekend.W:Ican’tI’m’afraid.M
[originaltext]M:Let’sgoforapicnicthisweekend.W:Ican’tI’m’afraid.M
[originaltext]Goingthroughcitiesandvillages,IwasattractedbySwedish
随机试题
[originaltext]Foryearsithasbeenpossibletosetupcamerastotakepict
电影院观众厅隔声门的隔声量应:()A.≥25dB B.≥30dB C.≥
预算定额的编制原则之一是( )。A.定性与定量分析相结合的原则 B.社会平均
根据《数字城市地理空间信息公告平台技术规范》,下列原则中,不属于数字城市地理空间
洛伐他汀的作用的靶点是A.血管紧张素转化酶B.β-肾上腺素受体C.羟甲戊二酰辅酶
运行中变压器发生以下哪些情况时,应立即汇报调控人员申请将变压器停运。变压器轻瓦斯
老李是一名退伍红军老战士,前不久刚刚入住光荣院,在与社会工作者小刘聊天的过程中,
在280nm波长附近具有最大光吸收峰的氨基酸是 A.天冬氨酸B.丝氨酸C.苯
注意事项 1.本题本由给定资料与作答要求两部分组成,考试时限为180分
通常根据贷款币种的不同将利率分为()。A.浮动利率和固定利率 B.法定利率
最新回复
(
0
)