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
59
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. 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. 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:http://tihaiku.com/zcyy/3398785.html
相关试题推荐
[originaltext]Forthreegroupsofexplorersformedbycollegestudentsand
[originaltext]A"blogger"isapersonwhowritesonanInternetcomputerwe
[originaltext]Jetlag,causedbytravelingbetweentimezones,isbecoming
[originaltext]ASouthAfricanbusinessmanisrefusingtoleaveCroatiaunti
[originaltext]ASouthAfricanbusinessmanisrefusingtoleaveCroatiaunti
[originaltext]ASouthAfricanbusinessmanisrefusingtoleaveCroatiaunti
[originaltext]TheWorldCarnivalissettostartitssecondfunfairinBeij
[originaltext]TheWorldCarnivalissettostartitssecondfunfairinBeij
[originaltext]TheWorldCarnivalissettostartitssecondfunfairinBeij
[originaltext]Wedon’tknowhowthefirstfirewasmade.Earlyfiresonthe
随机试题
Theicecreamconeandtheicedteawereallintroducedatthe1904LouisianaPu
Ifyouwerestartingatopuniversitytoday,whatwoulditlooklike?Youw
[originaltext]W:Andy,whathobbywouldyoutakeupifyouhadmoretime?M:I
根据美国((1787年宪法》,众议员名额按照各州人V1比例分配,各州人口数“按自
基金公司软件的使用应充分考虑软件的安全性、可靠性、稳定性和可扩展性,应具备()
统计量的概率分布构成了推断总体参数的理论基础。()
目标市场对产品毫无兴趣或漠不关心,这种状态的需求称为( )。A.负需求 B.
使用特雷诺比率时,一个非常多样化的基金往往会表现出更高的风险。()
在借贷期间可定期调整的利息率是( )。A.优惠利率 B.基准利率 C.浮动
可用于测定各类路基路面的回弹弯沉以评定其整体承载能力的方法是( )。A.贝克曼
最新回复
(
0
)