首页
登录
职称英语
[originaltext] For three groups of explorers formed by college students and
[originaltext] For three groups of explorers formed by college students and
游客
2024-01-27
6
管理
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.[22]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.[25]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 do we learn about the trip made by the young people?
23. What is the main topic of the passage?
24. What does the speaker say 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://www.tihaiku.com/zcyy/3400055.html
相关试题推荐
[originaltext][23]Manydeathsfromhomefiresaretheresultofburnsandpani
[originaltext]Thetwentiethcenturyhasbroughtwithitmanyadvances.(7)W
[originaltext]Thetwentiethcenturyhasbroughtwithitmanyadvances.(7)W
[originaltext][22]Mr.Stevensonwastheownerofageneralappliancestore
[originaltext][22]Mr.Stevensonwastheownerofageneralappliancestore
[originaltext][16]Areyoulookingforagoodrelationshipwithsomeonespe
[originaltext][16]Areyoulookingforagoodrelationshipwithsomeonespe
[originaltext]CharlieParkerisoneofAmerica’sgreatestjazzmusicians.H
[originaltext]CharlieParkerisoneofAmerica’sgreatestjazzmusicians.H
[originaltext]CharlieParkerisoneofAmerica’sgreatestjazzmusicians.H
随机试题
Whileopenofficesmaybedesignedtoencouragecommunityandcollaboration,
Forthepasttwoyears,Ihavebeenworkingonstudents’evaluationofcla
Mrs.Beck______(一直受她丈夫照看)sinceshewascollapsed.hasbeenunderthecareofher
A.-6A B.6A C.12A D.-12A
骨缺血性坏死常发生于()A.股骨头 B.胫骨结节 C.跟骨 D.舟骨 E
健康保险的基本责任,主要是指( ),即对被保险人的意外伤害和疾病医治所发生的医
请以“等比数列”为例,简述数学课堂教学导入的两种方法。
下列关于干胶法制备乳剂的叙述,错误的是A.水相加至含乳化剂的油相中B.油相加至含
个人信用贷款利率按照中国人民银行规定的同期同档次贷款基准利率执行,可以浮动。()
A.强制-被动型 B.指导-参与型 C.主动-被动型 D.共同参与型 E
最新回复
(
0
)