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
2024-01-21
74
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 (24)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 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://tihaiku.com/zcyy/3382915.html
相关试题推荐
[originaltext]M:Ireallydon’tknowwhattodothissummer.Ican’taffordto
[originaltext]M:So,canyouthinkofapersonthatyouadmiremost?W:Well,I
[originaltext]M:Hello!Youseemworried.CanIhelpyou?W:Oh,Ifeelsostra
[originaltext]M:Hello!Youseemworried.CanIhelpyou?W:Oh,Ifeelsostra
[originaltext]W:Hey,Taxi!Ah,great.Thanksforpullingover.M:Whereto?W:
[originaltext]W:Hey,Taxi!Ah,great.Thanksforpullingover.M:Whereto?W:
[originaltext]W:Hey,Taxi!Ah,great.Thanksforpullingover.M:Whereto?W:
[originaltext]M:Hi,Ruby,haveyouheardthatthereisgoingtobearobotsho
[originaltext]M:Laura,whatareyoubusydoing?W:I’mworkingonmyreporton
[originaltext]M:Laura,whatareyoubusydoing?W:I’mworkingonmyreporton
随机试题
Schoolsthroughouttheworldareexperiencingaperiodofrapidchangeand,
WhattheHeckDoesVincentvanGoghHaveToDoWithInternetMarketing?
Themovementofthemoonconvenientlyprovidedtheunitofmonth,whichwas_____
Howmanyfoursidedfiguresareinthisdiagram?[img]2011q4/ct_eyyjsam_eyyjsaiq
关于复审,说法错误的是( )。A.只须有针对性地抽看部分稿件 B.要对初审意
A. B. C. D.
患者男性,55岁,因交通事故致左髋部疼痛、畸形,查体见:左下肢呈内收短缩屈曲畸形
对急性粒细胞白血病和急性单核细胞白血病鉴别不大的是A.POX染色B.NAP积分C
提出“泛智”教育思想,探讨“把一切事物交给一切人类的全部艺术”的教育家是()。
体轻、质松泡的药材是A.党参 B.玄参 C.南沙参 D.北沙参 E.党参
最新回复
(
0
)