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
Some pessimistic experts feel that the automobile is bound to fall into disuse.They see a day in the not-too-distant future when
Some pessimistic experts feel that the automobile is bound to fall into disuse.They see a day in the not-too-distant future when
admin
2015-06-11
30
问题
Some pessimistic experts feel that the automobile is bound to fall into disuse.They see a day in the not-too-distant future when all autos will be abandoned and allowed to rust.Other authorities, however, think the auto is here to stay.They hold that the car will remain a leading means of travel in the foreseeable future.
The motorcar will undoubtedly change significantly over the next 30 years.It should become smaller, safer, and more economical, and should not be powered by the gasoline engine.The car of the future should be far more pollution-free than present types.
Regardless of its power source, the auto in the future will still be the main problem in urban traffic congestion (拥挤).One proposed solution to this problem is the automated highway system.
When the auto enters the highway system, a retractable (可伸缩的) arm will drop from the auto and make contact with a rail, which is similar to those powering subway trains electrically.Once attached to the rail, the car will become electrically powered from the system, and control of the vehicle will pass to a central computer. The computer will then monitor all of the car’s movements.The driver will use a telephone to dial instructions about his destination into the system.The computer will calculate the best route, and reserve space for the car all the way to the correct exit from the highway.
The driver will then be free to relax and wait for the buzzer (蜂鸣器) that will warn of his coming exit.It is estimated that an automated highway will be able to carry 10,000 vehicles per hour, compared with the 1,400 to 2,000 vehicles that can be carried by a present-day highway.
What provides autos with electric power in an automated highway system?
选项
A、A rail.
B、An engine.
C、A retractable arm.
D、A computer controller.
答案
A
解析
该题较简单。做题根据在第四段第二行。
转载请注明原文地址:https://kaotiyun.com/show/KoQi777K
0
在职申硕(同等学力)英语
相关试题推荐
Nuclearpower’sdangertohealth,safety,andevenlifeitselfcanbesummedupinoneword:radiation.Nuclearradiationha
IntheUSA,85%ofthepopulationovertheageof21approveofthedeathpenalty.Inthemanystateswhichstillhavethedeath
ComputerscanbeatchesschampionGaryKasparovathisgame,countalltheatomsinanuclearexplosion,andcalculatecomplexf
Safetyofficialshaveearnestlyquestionedwhethertheincreaseduseofsyntheticmaterialsheightenstheriskoffire.
Thosegovernmentswillprovidebigfoodandfuel______accordingtotheAsianDevelopmentBank.
Wefindthatbrightchildrenarerarelyheldbackbymixed-abilityteaching.Onthecontrary,boththeirknowledgeandexperienc
Fromchildhoodtooldage,wealluselanguageasameansofbroadeningourknowledgeofourselvesandtheworldaboutus.When
Oneofthemostwidelydiscussedsubjectsthesedaysisenergycrisis.Automobiledriverscannotgetgasoline;homeownersmayno
Manythingsmakepeoplethinkartistsareweird—theoddhours,thenonconformity,theclovecigarettes.However,theweirdestma
随机试题
该病人最可能的诊断是该病人应做的紧急检查是
关于牙骨质组织学特点的描述正确的是
关于织物复合工艺壁纸的说法,错误的是:
一般集镇人口规模预测时要考虑哪几类人口?
与国家审计相比,不属于社会审计特点的是()。
甲、乙、丙、丁分别购买了某住宅楼(共四层)的一至四层住宅,并各自办理了房产证。下列说法正确的有()。
实验研究的设计好坏直接影响研究的结果,好的设计有一定标准,这些标准除了包括“是否回答研究主题、是否可有效测量假设”,还包括的指标有()。
甲乙两县分别位于某风景秀丽的原始森林山麓两侧,两县都在打造统一区域的5A级风景区,对于各自风景区辖范围,地界产生争议,向上一级土地管理部门申请解决,土地管理部门解决争议的行为属于()。
令[*]=t,则χ=ln(1+t2),dχ=[*]dt,则[*]
Pricesdeterminehow【S1】______aretobeused.Theyarealsothemeansbywhichproductsandservicesthatareinlimitedsuppl
最新回复
(
0
)