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
Some pessimistic experts feel that the automobile is bound to fall into disuse, They see a day in the not. too-distant future wh
Some pessimistic experts feel that the automobile is bound to fall into disuse, They see a day in the not. too-distant future wh
admin
2009-01-05
33
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 hem to stay. They hold that the car will remain a leading means of urban travel in the foreseeable future.
The motorcar will undoubtedly change significantly over the next 30 yearn. 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 mi)an traffic congestion. One proposed solution to this problem is the automated highway system.
When the auto enters the highway system, a retractable arm will drop from the auto and make contact with a mil, 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 mute, and reserve space for the car an the way to the correct exit from the highway. The driver will then be free to relax and wait for the buzzer that win warn him of his coming exit. It is estimated that au automated highway will be able to handle 10,000 vehicles per hour, compared with the 1,500 to 2,000 vehicles that can be carried by a present-day highway.
In an automated highway system, all the driver needs to do is ______
选项
A、keep in the right lane
B、wait to arrive at his destination
C、keep in constant touch with the computer center
D、inform the system of his destination by phone
答案
D
解析
根据文章最后一段第一句话"The driver will use a telephone to dial instructions about his destination into the system.”我们可以看出在"automated highway system,"中,驾驶员所做的只是拨个电话,其余的就交给了计算机来处理。由此可知,D 符合题意。
转载请注明原文地址:https://kaotiyun.com/show/QfBK777K
0
专业英语四级
相关试题推荐
(1)"Britain’sbestexport,"IwastoldbytheheadoftheDepartmentofImmigrationinCanberra,"ispeople."Closeon100,000
IcametoAfricawithonepurpose:IwantedtoseetheworldoutsidetheperspectiveofEuropeanegocentricity.Icouldhavec
Fordecades,thetelevisionwastheflagshipofanyconsumer-electronicsproductline-up.Inallthegadgetsinthehome,【M1】___
Molesarealmostcompletelyblind,althoughitstinyeyescandistinguishlightfromdark.
Ifourbrainswerecomputers,we’dsimplyaddachiptoupgradeourmemory.Thehumanbrain,therefore,ismore【M1】______comple
Parentswhosmokeoftenopenawindoworturnonafantocleartheairfortheirchildren,butexpertsnowhaveidentifiedar
Parentswhosmokeoftenopenawindoworturnonafantocleartheairfortheirchildren,butexpertsnowhaveidentifiedar
Parentswhosmokeoftenopenawindoworturnonafantocleartheairfortheirchildren,butexpertsnowhaveidentifiedar
Parentswhosmokeoftenopenawindoworturnonafantocleartheairfortheirchildren,butexpertsnowhaveidentifiedar
Youngpeoplearefacinganuncertainfuture.Asthe21stcenturydawned,theywerepromisedawealthofprospectsunless【M1】____
随机试题
考生文件夹下存在一个数据库文件“samp2.accdb”,里面已经设计好“tStud”、“tCourse”和“tScore”三个关联表对象及表对象“tTemp”。试按以下要求完成设计:(1)创建一个查询,查找并显示学生的“姓名”、“课程名”和“成
没有抽象的真理,真理总是具体的。这一命题强调()
中毒代谢性和营养障碍性神经病最常见的病理改变是
下列关于局麻的说法,错误的是
区别甾体皂苷和三萜皂苷区别酸性皂苷和中性皂苷用
Ⅲ度营养不良患儿腹壁皮下脂肪厚度应是
下列部位应设置甲级防火门的是:
A公司从B公司处租人设备一台,使用期3年。合同约定,A公司在三年内每年末向B公司支付租金10万元,若贴现率为10%,则三年租金的现值为24.87万元。如果合同约定改为三年内每年年初付租金10万元,贴现率不变,则三年租金的现值为()万元。
下列各项有关每股收益列报的表述中,正确的有()。
Atpresentgroupsofscientificworkers,often【C1】______bytheirgovernments,spendtheirtimein【C2】______the【C3】______ofearth
最新回复
(
0
)