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
Computers in Cars You’re far from home on a lonely road. Shadowy forests stretch away on both sides. A thick mist (雾) makes it
Computers in Cars You’re far from home on a lonely road. Shadowy forests stretch away on both sides. A thick mist (雾) makes it
admin
2009-06-15
47
问题
Computers in Cars
You’re far from home on a lonely road. Shadowy forests stretch away on both sides. A thick mist (雾) makes it difficult to see far beyond your car’s windshield (挡风玻璃).
"Can this be route 90A?" you wonder. If it is, you should be near a town. Yet there’s no hint of one. Night is closing in. And you’re low on gasoline.
This is a situation where an in-car computer that can navigate would be a big help.
A car computer that navigates? Yes! Such computers exist. Several experimental models are being tested by General Motors, Ford, Chrysler, and several foreign car makers. These computers vary in detail. But they all contain series of maps on videodiscs or videotapes. For example, one computer system contains 13,300 maps covering the continental US.
Before starting out on a trip, a driver can type in the code for the region he or she plans to drive through. The computer then shows a map of that region. At the same time, a tiny radio receiver linked to the computer goes to work. It picks up signals from navigation satellites such as the NAVSTAR network. Using these signals, the computer shows the car’s position at all times and displays this position on the map. The computer can also calculate and display the best route to follow.
A navigation computer may also receive and use data about road construction, weather conditions, and traffic jams. This information would be displayed to the driver and the computer would also use the information to work out alternate (交替的) routes.
Most cars nowadays also contain computers that help cars run more efficiently. Microprocessors (微处理机) control certain engine functions by regulating the mixing of fuel. Data on car speed, oil pressure, revolutions per minute, engine temperature, and fuel level can be displayed as digital data (numbers) or warning lights.
Some auto designers suggest that a central computer display be used to clearly present such timely information as car speed and fuel level. Warning lights would indicate a drop in oil pressure or a sudden rise in engine temperature. To get more information on these conditions, the driver could call it up on the computer display screen. When needed, the computer could be "asked" to provide navigation aid or information about the car’s condition.
选项
A、make us believe how complex the highway computer network is.
B、let us know how in-car computers are linked to road signs.
C、show us how helpful a navigation computer can be.
D、tell us that NAVSTAR has come into use.
答案
C
解析
转载请注明原文地址:https://kaotiyun.com/show/6ihd777K
本试题收录于:
职称英语理工类C级题库职称英语分类
0
职称英语理工类C级
职称英语
相关试题推荐
Thepolicemenactedquicklybecauseliveswere(atstake).
A.fallasleepagainB.becomemoreenergeticthefollowingdayC.sleeplessthan7hoursD.confirmthoseseriousconsequen
MenTooMaySufferfromDomesticViolenceNearlythreein10menhaveexperiencedviolenceatthehandsofanintimate(亲密的)
SwineFluinNewYorkTheCentersforDiseaseControlandPrevention(CDC)hasconfirmedcasesofswine(猪)【51】ineightstud
Inprehistorictimespeopleseldomstayedanywhereforverylongbecausetheirfoodsupplyusuallyranout.
In197theUnitedStatesArmybegantoassignwomentopositionspreviouslyclassifiedashavingcombatstatus.
Smokingisconsidereddangeroustothehealth.Ourtobacco--seller,Mr.Johnson,therefore,alwaysaskshiscustomers,iftheya
Thequestion"Areyouamanoramouse?"reallymeanstoaskwhetheryoubelieveThelastparagraphtellsusthatwhenyouare
CaptainCookArrowLegendItwasagreatlegendwhileitlasted,butDNAtestinghas(51)endedatwo-century-oldstoryoftheHaw
随机试题
女性,28岁,哺乳期,停经45日。B超于宫腔内探及妊娠囊,准备行人工流产负压吸宫术,术前探查宫腔11cm未感到底。无腹痛。查体:P90次/分,BP110/80mmHg,一般情况好,阴道流血不多,腹部无压痛及反跳痛。不恰当的处理是
已知某筛检试验的灵敏度和特异度,用该试验筛检两个人群,其中甲人群的患病率为10%,乙人群为1%,下述哪一项描述是正确的()。
下列行为中,违反《注册建筑师条例》的是:
下列关于并联电容组专用放电器的选择原则正确的哪些?()
下列选项中,符合《建设工程安全生产管理条例》规定的有()。
以下关于1人有限公司的说法正确的有()。Ⅰ.一个自然人只能投资设立一个一人有限责任公司,该一人有限责任公司不能投资设立新的有限责任公司Ⅱ.一人有限责任公司应当在每一会计年度终了时编制财务会计报告,并经会计师事务巨审计Ⅲ
在超额累进情况下,对计税基数各级次的增加部分所适用的税率是()。
“查清中国海.进军三大洋,登上南极洲”是曾经的海洋梦想“老三样”,这个梦想也只是在本世纪初才得以________实现。但限于当时的能力,主要做的是海洋的表面文章,对于海面之下隐藏的深海神秘世界,则只是________。填入划横线部分最恰当的一项是:
中共十一届三中全会的主要功绩是
A、Hewenttothematch.B、Hetookparticipateinameeting.C、Hewatchedasportmatch.D、Helistenedtothecommentary.D
最新回复
(
0
)