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
36
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.
According to the passage, which of the following has not been considered by the MIT researchers?
选项
A、Driving speed.
B、Satellite data.
C、Fuel quality.
D、Air conditioning.
答案
C
解析
信息筛选题。本题需要对文章第三段的信息进行筛选。…included detailed GPS-based data…涉及[B]“全球卫星定位系统的数据”;…factored in ambient temperature and inefficient driving behavior…和…extensive heating or cooling…提到了环境温度和[D]“空调”因素; …measured second-by-second velocity of each kind of trip…则考虑到了[A]“车辆速度”问题。本文唯一没有考虑到的是[C]“油品质量”问题。
转载请注明原文地址:https://kaotiyun.com/show/ftBZ777K
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
BeautyisbigbusinessinChina.Thecountry’scosmeticsmarketisworth$26billionayear,makingitthethird-biggestinthe
BeautyisbigbusinessinChina.Thecountry’scosmeticsmarketisworth$26billionayear,makingitthethird-biggestinthe
[A]Theseissuescutrightacrosstraditionalreligiousdogma.Manypeopleclingtothebeliefthattheoriginofliferequired
WritealettertoProfessorSmith,aworldfamousprofessormajoringinChinesephilosophyandreligiousstudies,andinvitehim
随机试题
控制论模式的贡献和问题。
关于气管内插管下列叙述错误的是
采购人报财政部门办理进口产品审核手续,应按规定格式填写《政府采购进口产品申请表》和相关证明材料,相关证明材料的要求根据进口产品的不同情况有所区别,具体包括()。
影响混凝土保水性的主要因素是混凝土的()。
四个弯矩图中形状正确的为( )
根据行政复议法律制度的规定,下列有关行政复议申请人的表述中,正确的是()。
某中外合资经营企业的投资总额为1800万美元。在其注册资本中。中方认缴的出资额为500万美元。根据中外合资经营企业法律制度的规定,下列关于外方认缴出资最低限额的表述中,正确的是()。
计算机中所有的信息都采用二进制来表示,人们为了方便,也常常将二进制转换为八进制和十六进制。二进制数1100010转换为八进制和十六进制分别是()。
高雅:气质( )
教育制度就是学校教育制度。
最新回复
(
0
)