首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
考研
One of the biggest hurdles to getting more electric cars on the road is " range anxiety," the worry people have of their car bat
One of the biggest hurdles to getting more electric cars on the road is " range anxiety," the worry people have of their car bat
admin
2018-02-17
33
问题
One of the biggest hurdles to getting more electric cars on the road is " range anxiety," the worry people have of their car battery dying before they get to a charging station. A new study should help brush those fears aside.
Most American drivers do not go beyond the distance that today’s electric cars can go on a single battery charge in one day, the study found. In fact, 87 percent of the vehicles on the road could be replaced by low-cost EVs on the market today even if they were only charged overnight, say the MIT researchers who conducted the study published in Nature Energy. If this large-scale
swap
were to happen, it would lead to roughly 30 percent less carbon emissions even if the electricity were coming from carbon-emitting power plants.
The researchers analyzed daily vehicle travel patterns across the U. S. by bringing together two large datasets. One, the National Household Travel Survey, gave them information on millions of trips made by all kinds of cars. The other included detailed GPS-based data collected by state agencies that measured second-by-second velocity of each kind of trip. The researchers also factored in ambient temperature and inefficient driving behavior to calculate the energy consumption of each trip: extensive heating or cooling and driving habits such as hard acceleration zap energy and can reduce driving range.
Taking the 2013 Nissan Leaf as an example of an affordable EV on the market, the researchers found that it could meet the driving needs of 87 percent of vehicles on a single day. That number could go up to 98 percent as batteries meet new capacity targets set by the Advanced Research Projects Agency-Energy.
What about the remaining 13 percent of trips? The researchers admit that electric cars might not cut it for longer trips, such as vacation travel. For those times, they suggest that people in a two-car household could use their gasoline-powered vehicle, or they could rely on car-sharing or renting services.
The data covered the country’s 12 major metro cities, from dense urban areas such as New York to sprawling cities like Houston. Surprisingly, the adoption potential of electric vehicles was pretty similar across these diverse cities: it only varied from 84-93 percent. " This goes against the view that electric vehicles—at least affordable ones, which have limited range—only really work in dense urban centers," said the study’s lead author Jessika E. Trancik in a press release.
Trancik and her colleagues admit that addressing range anxiety might not be enough to boost EV sales. "Satisfying consumer preferences for vehicle performance and aesthetics will also be important, as will financing options to offset the purchase price," they say in the paper.
What do we know about electric cars today?
选项
A、They can travel for one day on a single charge.
B、They can replace 13 percent of gas vehicles.
C、They surpass a typical American’s daily driving distance.
D、They help to cut the prices of gas vehicles.
答案
C
解析
信息筛选题。答案可定位到第二段第一句Most American drivers do not go beyond the distance that today’s electric cars can go on a single battery charge in one day,即绝大多数美国司机驾驶机动车的单日行驶里程不会超出电动汽车的单次充电续航里程,而非选项[A]所述“电动汽车单次充电后能行驶一天”。选项[B]数据有误,能替换的燃油汽车不是13%,而是87%。选项[D]“有助于降低燃油汽车的价格”属于主观臆断,文中没有对应信息。
转载请注明原文地址:https://kaotiyun.com/show/wtBZ777K
0
考研英语一
相关试题推荐
BeautyisbigbusinessinChina.Thecountry’scosmeticsmarketisworth$26billionayear,makingitthethird-biggestinthe
BeautyisbigbusinessinChina.Thecountry’scosmeticsmarketisworth$26billionayear,makingitthethird-biggestinthe
BeautyisbigbusinessinChina.Thecountry’scosmeticsmarketisworth$26billionayear,makingitthethird-biggestinthe
BeautyisbigbusinessinChina.Thecountry’scosmeticsmarketisworth$26billionayear,makingitthethird-biggestinthe
[A]Theseissuescutrightacrosstraditionalreligiousdogma.Manypeopleclingtothebeliefthattheoriginofliferequired
Successfulsportsprofessionalscanearnagreatdealmoremoneythanpeopleinotherimportantprofessions.Somepeoplethinki
WritealettertoProfessorSmith,aworldfamousprofessormajoringinChinesephilosophyandreligiousstudies,andinvitehim
Themythologyofaculturecanprovidesomevitalinsightsintothebeliefsandvaluesofthatculture.【F1】Byusingfantastican
Themythologyofaculturecanprovidesomevitalinsightsintothebeliefsandvaluesofthatculture.【F1】Byusingfantastican
随机试题
下列排序算法中,其时间复杂度和记录的初始排列无关的是()
收集病史时应注意询问以下各项,除了患者的治疗措施不正确的是
我国的利率基本上属于管制利率类型,利率由()统一管理。
工程项目范围管理的内容不包括()
根据“营改增”试点过渡政策的规定,下列项目免征增值税的是()。(2016年)
牛顿在科学上的贡献是多方面的,最重要的是()。
近年来,中国青少年体质下降乃不争之事实。2005年国民体质监测结果显示,我国青少年学生体能素质整体下降。2005年与1995年相比,学生的柔韧性、爆发力、肌力、耐力、肺活量均呈下降趋势。其中,速度素质、力量素质已连续10年下降,耐力素质已连续20年下降。以
下列叙述在历史上不可能发生的是()。
设f(x)三阶可导,,证明:存在ξ∈(0,1),使得f′″(ξ)=0.
阅读以下关于分布式系统设计的说明,回答下列问题。【说明】某软件公司拟开发一套电信领域的分布式系统,该系统后台多个功能模块同时运行时的计算负载较大,且需要控制不同的特定电信硬件设备,由于硬件体积和I/O端口冲突等原因,这些设备需要分散安装在多
最新回复
(
0
)