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
2018-08-16
28
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://kaotiyun.com/show/dePC777K
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
Theygottherewithoutanydifficultywiththeguide______theway.
A、Inahospital.B、Inapostoffice.C、Atarailwaystation.D、Atanairport.D
Nobodywantstobesick.Unfortunatelyourbodiescandevelopproblems.Whenwearen’thealthy,ourbodiestellus.Sometimesa
Americansspendalotofmoneyintheirdailylives.Workingpeoplespendmoneyontransportationtoandfromworkandonvariou
Somuch______hisfinancialpositionthathecan’tsleepatnight.
Iwassurprisedtofindhisarticleonsuchan()topicso().
Pianoisapopular______.
ReachingnewpeaksofpopularityinNorthAmericaisIcebergWaterwhichisharvestedfromicebergsoffthecoastofNewfoundlan
______,hedoesgetannoyedwithhersometimes.
A、Indifferent.B、Doubtful.C、Pleased.D、Surprised.A
随机试题
银行存款日记账必须采用订本式账簿。判断:理由:
下列属于血管内溶血的疾病是
五志相胜,怒胜()
按照记账凭证的审核要求,下列内容中属于记账凭证审核内容的是()。
根据《票据法》的规定,支票的提示付款期限为()。
2012年12月,经董事会批准,甲公司自2013年1月1日起撤销某营销网点,该业务重组计划已对外公告。为实施该业务重组计划,甲公司预计发生以下支出或损失:因辞退职工将支付补偿款200万元,因撤销门店租赁合同将支付违约金20万元,因处置门店内设备将发生减值损
“设计.应用”领域是指运用一定的物质材料和手段,培养设计意识和实践能力的学习领域。本学习领域中“设计”一词包括与学生生活有关的现代设计基础和传统工艺。()
2008年3月根据国务院机构改革方案,改革后,包括国务院办公厅在内,国务院组成部门设置为()个。
IntheUnitedStates,thefirstdaynurserywasopenedin1854.Nurserieswereestablishedinvariousareasduringthe【C1】______
Schoolspiritisaqualitythatbeginsearlyandoftenlastsalifetime.
最新回复
(
0
)