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
外语
A、Autonomy makes the transportation network more comprehensive. B、Electric motors are more efficient than internal combustion en
A、Autonomy makes the transportation network more comprehensive. B、Electric motors are more efficient than internal combustion en
admin
2022-05-25
70
问题
Good afternoon, everyone. Today, I’ll talk about how autonomous flying taxis could change the way you travel. Cities are getting more populated. The roads are full, and it’s really difficult to expand them. And so in a lot of places, there really aren’t a lot of good solutions for getting around traffic. But what if you could fly over it? The sky is underutilized, and I would argue it will never be as congested as the roads are. In many cases, flying can be a long-term, compelling alternative to traveling on the ground.
One of the first things we need is an aircraft that can take off and land in small spaces and quickly take you where you want to go. And helicopters can do that today, but traditionally, helicopters have been just a little bit too expensive, just a little too hard to pilot and just a little too noisy to be used for daily transportation in cities. Well, electric flight and autonomy are changing that.
Electric flight, in particular, unlocks new possibilities for vehicle configurations that we just could not explore in the past. If you use electric motors, you can have many of them around the aircraft, and it doesn’t add a lot of extra weight. And that gives you redundancy and safety. And also, they are cleaner, cheaper and quieter than internal combustion engines. Autonomy allows the transportation network to scale, and I actually think it makes the aircraft safer. Commercial flights are already automated for most of their duration, and I believe there will come a day when we won’t even trust an airplane that required a human to fly.
So, one of our teams at A3 wanted to see just how close this future really was. So they built and flew a prototype of one such vehicle. And they made a point of only using mature, commercially available technologies today. We call it Vahana. It’s fully electric. It takes off and lands vertically, but flies forward like a regular airplane. It’s fully self-piloted. You push a button, and it takes off, flies and lands, all by itself. The prototype that you see here is designed to carry a single passenger and luggage. And it can go about 20 miles in 15 minutes. And our estimate for a trip like that is it would cost around 40 dollars, which you can really build a business around.
Question 16. Why does the speaker say traditional helicopters are not fit for daily transportation?
Question 17. What do we learn about electric flight and autonomy?
Question 18. What do we learn about Vahana?
选项
A、Autonomy makes the transportation network more comprehensive.
B、Electric motors are more efficient than internal combustion engines.
C、The aircraft adds little extra weight with many electric motors on it.
D、Commercial flights have already been automated for all of their duration.
答案
C
解析
转载请注明原文地址:https://kaotiyun.com/show/cux7777K
0
大学英语六级
相关试题推荐
推行各种便民措施(convenienceforpeoplemeasure)是城镇化重要的一步。城镇化不是简单地把农村居民迁移到城市,而是要让为城市作出巨大贡献的外来务工者(migrantworker)享受到城市居民的社会福利。城镇化中一个重要的
中国拥有丰窝的矿产资源,是世界上少有的矿产自给自足的国家之一,所有世界已知的矿产都能在这里找到。迄今为止,地质学家已经探明储量的矿物使中国在矿产总储量上位列世界第三。已经探明储量的能源包括煤、石油、天然气;放射性矿物包括铀(uranium)和钍(tho
A、Organisingprotests.B、Recruitingmembers.C、Actingasitsspokesman.D、Savingendangeredanimals.A根据选项,可以预测本题询问某人的工作内容。男士说他在
A、Participationinsportsisrelevanttopositiveeffects.B、Participationinsportsincreasesfemalecollegeattendance.C、Part
A、Universities’indifferencetotheacademicachievement.B、Theheavyworkloadstudentshavetocopewith.C、Thecommunicationf
A、Takingthemoreaggressiverole.B、Sayingsomethingunexpected.C、Avoidingreplyingwithoutthinking.D、Respondingquicklyto
A、ItwillbeonthefollowingweekendB、Itwillbeoutintothecountryside.C、Itwilllastonlyoneday.D、Itwillstarttomorr
A、Thesadnessofbeinginvolvedinaccidents.B、Waystolimittheuseofprivatecars.C、Theseriouspollutiononmotorroads.D
A、It’sboring.B、It’snotwell-paid.C、Itrequirestravelingalot.D、It’stiring.D
A、TheflatinBakerStreethasalreadybeenrented.B、Theflatisinaverygoodlocation.C、Thewomanmightnotbeabletorent
随机试题
A母婴传播B空气传播C虫媒传播D血液传播E粪一口传播麻疹的主要传播途径是
某中等城市长途汽车客运站规划设计方案(见图4),规划用地毗临城市主次干道,两条干道均设置有城巾公共汽车站点。该方案将长途站的长途客车到、发车区和站前广场分别布置在车站主体建筑售票大厅的两侧。[问题]请按照示意图中标明的①~⑦各点,合理组织长途客
下列属于无效合同的情形有()。
基金募集期限届满,封闭式基金募集的基金份额总额达到核准规模的( )以上,才可以办理其他手续。
行业分析是对()的剖析与研究。
旅行社经营原则包含()。
—Hello!—Hi,Sara.ThisisDavy.【H6】______—Fine.Howaboutyou?—【H7】______Ihadareallygoodtimeyesterdayevening.—Idi
正值毕业季,306宿舍有A、B、C、D四位男同学,他们准备找班主任宋老师合影,若要求宋老师坐中间,A、B两位同学不能挨着坐,那么总共有()坐法。
二叉树是结点的有限集合,这个有限集合或者为______,或者由一个根结点及两棵不相交的、分别称作为根的左子树和右子树的二叉树组成。
以下不合法的数值常量是()。
最新回复
(
0
)