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
A、The user’s position. B、The speed of the satellites. C、The distance to destination. D、The information to the earth. A根据录音最后一句“一
A、The user’s position. B、The speed of the satellites. C、The distance to destination. D、The information to the earth. A根据录音最后一句“一
admin
2016-12-22
73
问题
For three groups of explorers formed by college students and young white collars, it started out as a wonderful trip. They were enjoying themselves exploring the Inner Mongolian desert. But when the sandstorm came, the trip became a disaster.
The drama unfolded during the May Day holiday. One girl did not make it before the students were rescued. The group was eventually found with the help of a GPS receiver.
GPS, or global positioning system, is a satellite-based navigation system made up of a network of 24 satellites. It was originally created for military use by the US in 1980s but is now available for civilian use. GPS works in any weather conditions, anywhere in the world, 24 hours a day. And the service is free.
GPS satellites circle the earth twice a day and transmit signals and information to the earth. GPS receivers take this information and calculate the user’s exact location. A GPS receiver must be locked on to the signals of at least three satellites to calculate the latitude and longitude of its location. With four or more satellites in view, the receiver can determine the user’s altitude. Once the user’s position has been determined, the GPS receiver can calculate other information, such as speed, direction, distance to destination, and a whole lot more.
22. What is true about the trip made by the young people?
23. What is the main topic of the passage?
24. Which of the following is true about the GPS?
25. What must be determined first before the GPS receiver can calculate other information?
选项
A、The user’s position.
B、The speed of the satellites.
C、The distance to destination.
D、The information to the earth.
答案
A
解析
根据录音最后一句“一旦确定了使用者的位置,全球定位系统接收器就能计算其他的信息,如……”,可知A正确。
转载请注明原文地址:https://kaotiyun.com/show/PZY7777K
0
大学英语四级
相关试题推荐
Whileit’seasyenoughtobrushoffafewsleeplessnightswithapotofcoffeeandtheoccasionaldesknap,youmaybedoingmo
CollegeRequiresFitnessAssessmentforFreshmenA)DuringtheirfirstsemesteratCokerCollege,studentsthisyearwilltakea
CollegeRequiresFitnessAssessmentforFreshmenA)DuringtheirfirstsemesteratCokerCollege,studentsthisyearwilltakea
Politicsisanemotionalbusiness.Still,manypeoplefoundthemselvesunusuallymovedbythehistoricpresidentialinauguration
There’snoquestionthattheEarthisgettinghotter.Therealquestionsare:Howmuchofthewarmingisourfault,andarewe【C
A、Havingabreak.B、Continuingthemeeting.C、Movingontothenextitem.D、Waitingalittlelonger.A细节题。刚完成一个任务,女士建议在进行下一项工作前休
A、Ahousewife.B、Anurse.C、Ateacher.D、Astudent.D推理题。根据文章中女士的话wellyouknowhow...withmidtermsandeverything可知她要准备期中考试,因此可以
Lookingatthebasicbiologicalsystems,theworldisnotdoingverywell.Yeteconomicindicatorsshowtheworldis【B1】______.
A、Stopfeelingdepressedfromparenting.B、Avoidthefear-basedparenting.C、Paymoreattentiontochildren.D、Increasehappines
A、Youngstersdon’treallyknowwhatisfashion.B、Peopleshouldcaremoreabouttheirappearance.C、Styleschangemorequicklyt
随机试题
读下面“古丝绸之路示意图”,回答下列问题。沿图中古丝绸之路方向,自然景观的变化主要体现了()。
论述会议纪要的写作应注意的问题。
DIC的血液凝固障碍表现为
男,42岁。近几年来左侧腮腺数次肿痛。每年发作1~2次,抗感染治疗可控制。平常口内有时有咸味液体流出。检查:腮腺导管口有少量分泌液尚清。该患者不宜实行的治疗是
背景某港口新建一消防泵站内包含40000m3消防水池工程,消防水池一半位于地面以下一半位于地面以上,整体钢筋混凝土板式基础,四周全现浇混凝土剪力墙,全部采用C30P12抗渗混凝土浇筑成型。由于水池在整个港口消防工程中的重要地位,在混凝土自防水基础上,内
我国应用主权属我、搁置争议、共同开发的原则,处理南沙群岛争端。()
你上班的时候,碰到两个同事正在谈论你的隐私,你怎么做?
公平理论的提出者是()
汤姆、玛丽和约翰在图书馆一共借了4本书。汤姆说:“我借了2本书,玛丽和约翰都只借了1本书。”玛丽说:“我借了3本书,汤姆借了1本书,约翰没有借。”约翰说:“我借了2本书,汤姆借了2本书,玛丽没有借。”接着,汤姆说:“玛丽说谎了。”玛丽说:“约翰说谎了。”
Manhasbeenstoringupusefulknowledgeabouthimselfandtheuniverseattheratewhichhasbeenspiralingupwardfor10,000y
最新回复
(
0
)