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
专升本
When a man is driving a car for long distances along a main road or motorway, two of his problems are to keep the car at a fairl
When a man is driving a car for long distances along a main road or motorway, two of his problems are to keep the car at a fairl
admin
2015-03-13
29
问题
When a man is driving a car for long distances along a main road or motorway, two of his problems are to keep the car at a fairly steady speed and to make sure that he does not run into the car in front of him. Easy enough you may think—but it is even easier on a long motorway drive for a man’s attention to wander. Some experiments have been made with a system which involves computer control of these two problems. The car’s computer keeps the speed steady. At the same time the distance between the car and another car in front of it is rear reflectors(后反射镜)of the car in front and is reflected back, so enabling the distance to be measured. This information is fed to the computer, which adjusts its speed control accordingly.
There are also to be experiments with a system called "Minigap". This system will he particularly useful to driver stuck in long queues of cars, as the computer would control not only the speed and the distance from the car in front, but also the steering(方向盘操纵). Using this system, a driver could switch over to Minigap, take out his newspaper and do the crossword puzzle while car drives most of the way home automatically. To the roadside observer, the line of cars would seem like a train which carriages could join or leave at will (任意).
What is the main subject of the passage?
选项
A、Speed control.
B、The system "Minigap".
C、The computer and the motorcar.
D、Two of driver’s problems.
答案
C
解析
全文所谈论的是在汽车上安装自动控制装置。D在文中引出主题,A、B分别是两种控制类型,故应选C。
转载请注明原文地址:https://jikaoti.com/ti/jCNGFFFM
本试题收录于:
英语题库普高专升本分类
0
英语
普高专升本
相关试题推荐
Morethanfortythousandreaderstolduswhattheylookedforinclosefriendships,whattheyexpected【56】friends,whattheywer
CopernicuswasborninTorun,Poland,onFebruary19,1473.Littleisknownabouthisearlylifeexceptthathisfatherdiedwhe
Themanagerurgedhisstaffnotto______thesplendidopportunity.
Mostepisodesofabsent-mindedness—forgettingwhereyouleftsomethingorwonderingwhyyoujustenteredaroom—arecausedbya
Withoutproperplanning,tourismcancauseproblems.Forexample,toomanytouristscancrowdpublicplaces’thatarealsoenjoy
Jameswroteaplay【31】television,aboutanimmigrantfamilywhocametoEnglandfromPakistan,andtheproblemstheyhadinEngl
HibernationHibernationisoneofthemainadaptationsthatallowcertainnorthernanimalstosurvive【1】,coldwinters.Hib
Althoughjackworksveryhard,yet,hisworkisnottotheboss’______(satisfy).
Mewaslate______thetrafficjam.
就预测地震而言,科学家能做的似乎微乎其微,不过城市规划设计师却可以在减轻地震造成的损失方面有点作为。
随机试题
Nutritional(营养的)statusaffectschildren’sbehavior.Well-nourishedchildrenaremorealertandattentiveandarebetterablet
妊娠10周时出现阵发性下腹痛及大量阴道出血伴小块组织物排出,并发生失血性休克。应首先考虑()
关于妊娠图的描述,正确的是
下列不属于厥证特点的是
某产品划分为四个功能区,采用环比评分法得到的功能暂定重要性系数见下表:
采用公开招标方式采购的,招标采购单位自愿在财政部门指定的政府采购信息发布媒体上发布招标公告。()
()是东汉琴家阮籍的重要代表作品。
下列关于春秋时期法制的表述,错误的是()。
微分方程的通解为___________.
LocatedinNewSouthWales,oneofAustralia’smostagriculturally,industriallyandculturallyrichareas,CharlesStrutUniver
最新回复
(
0
)