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
Today a pilot is totally dependent on what the air traffic controller on the ground tells him. He can’t see enough to be safe. F
Today a pilot is totally dependent on what the air traffic controller on the ground tells him. He can’t see enough to be safe. F
admin
2007-12-11
120
问题
Today a pilot is totally dependent on what the air traffic controller on the ground tells him. He can’t see enough to be safe. Flight watch is an instrument intended to help him.
On a screen in front of the pilot, there will be a map of the airspace around the plane. The pilot’s own flight level or height and his own plane at the center of the screen will show up. On the map any other planes in the airspace will appear as blobs of light with "tails" showing the direction of their flight. The Flight watch map is unusual, for the other planes are not shown at their true ranges, but at their distances away in flying time. That gets over the problem of fast planes being too far away to be seen but likely to make contact in seconds and slow planes that are close enough to be seen but so slow that there’s no chance of contact for, say, ten minutes.
The pilot will be able to see on the screen whether another plane’s course conflicts with his own. The screen will show him the flight number of the other plane, so he can contact air traffic control and ask them about the other plane’s course. Then he can take avoiding action if necessary. The screen will show him whether his action puts him in danger from yet another aircraft.
Technically, the system will be quite complex. Computers will be necessary on the ground and in each aircraft to enable Flight watch to collect data about the planes’ courses and to calculate the distances between planes. But such small computers are now quite cheap, simple and reliable.
选项
A、Flight watch.
B、The air traffic controller in the plane.
C、The command of the air traffic controller on the ground.
D、The pilot himself.
答案
C
解析
从原文第一段中的第一句可知,只有A项是符合题意的。
转载请注明原文地址:https://kaotiyun.com/show/C6LC777K
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
Haveyou【B1】______askedyourselfwhychildrengotoschool?Youwillprobablysaythattheygo【B2】______theirownlanguagea
Weallhopehe’llsoon______hisdisappointmentandbehappyagain.
Iwouldliketotakethisopportunitytoexpressmysincere______ofyourhelp.
Itwasnotuntilhehadarrivedhome______herememberedhisappointmentwiththelawyer.
A、Inahotelroom.B、Inarestaurant.C、AtanairportD、Atarailroadstation.D
A、keepshimselffromusingitsbenefitB、cannotenjoyitsbenefitatanytimeC、failstokeepitsbenefitfrombeingusedD、enjo
互联网的出现改变了人们的生活、工作和思维方式。
Agloomyafternoonsawmetakingmyroutinepaththroughthatconstructionsite.Forthewalker’sconvenience,asetofstonest
Thereusedtobe______beautifuloldbridge,butduringthewar______bridgewasblownup.
Workaholism(工作狂)canbeaseriousproblem.Trueworkaholics(工作狂)wouldratherworkthandoanythingelseandtheyprobablydon
随机试题
在环境温度为30℃时做剧烈运动,人体散热的途径有
下肢牵引时抬高床尾的主要目的是
______是项目决策分析与评价的关键,尤其是在多目标决策时,往往形成各个方案各有千秋的局面。
某项目拟从国外引进关键设备,该设备离岸价格为100万美元,国外海运费费率5%,海上运输保险费用1.4万元人民币,银行财务费费率0.5%,外贸手续费费率1%,关税税率10%,进口环节增值税税率17%。若汇率为1美元=6.5元人民币,设备国内运杂费费率2%,则
城市热力管道焊接质量检验有()。
用友软件中,“管理费用”科目通常设置的辅助核算是部门核算。()
对于经常出差人员来说,使用平板电脑能够给他们带来方便,平板电脑是易操作的办公设备,可以视为一个好的设备。但是平板电脑更新换代太过频繁,会加入许多新的软件,所以,它可能并不能被视为一个好的设备。以上推断基于的假设是()。
HelpWantedAdOutstandingopportunitywithlocalrealestatecorporation.Requiresstrongbackgroundinrealestate,financ
软件需求分析阶段的工作,可以分为四个方面:需求获取、编写需求规格说明书、需求评审和()。
ThenativepeopleofNorthandSouthAmericaweregiventhename"Indians"bythe【B1】______ChristopherColumbus.Hethoughthe
最新回复
(
0
)