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
2023-06-26
36
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://tihaiku.com/zcyy/2783789.html
相关试题推荐
[originaltext]ThomasTommyCarterisaplantscientistinNorthCarolina.H
[originaltext]W:Andy,whathobbywouldyoutakeupifyouhadmoretime?M:I
[originaltext]W:Andy,whathobbywouldyoutakeupifyouhadmoretime?M:I
[originaltext]W:Andy,whathobbywouldyoutakeupifyouhadmoretime?M:I
[originaltext]W:Tony,[8]you’vebeenaracing-driverfornearly10years.You’
[originaltext][5]/[6]TherecentlyreleasedreportfromtheInternationalAg
[originaltext][5]/[6]TherecentlyreleasedreportfromtheInternationalAg
[originaltext]The19thcenturyWildWestcriminalBillytheKidhasbeende
[originaltext][1]DefenseofficialsintheUnitedStateshaveconfirmedthat
[originaltext][23]Thesolution,bothtopreventtheexcessesofpraiseand
随机试题
WalterIsaacson’snewbiography(传记)ofSteveJobsisaverysuccessfulbooko
[originaltext]M:Lesley,againandagainthesedayswehearthewords"he’son
根据《中华人民共和国安全生产法》的规定,道路货物运输企业的主要负责人对本企业(单
国务院卫生行政主管部门按照分类指导、快速反应的要求,制定的是A、突发事件应急处理
2009年,某省全年粮食作物播种面积253.85万公顷,比上年增长1.5%
(2020年真题)下列不属于《期货交易管理条例》规定的设立期货公司应当具备的条件
检测血清酶活力时,考虑到检测的灵敏度和测定上限,一般样品与试剂体积比为A:1:1
企业价值链要素中,下列属于主体活动的是( )。A、市场营销 B、人力资源管理
贷款审批要素包括()。A.贷后管理要求 B.贷款利率 C.贷款期限 D.
医疗机构抗菌药物管理机构应当定期组织相关专业技术人员对抗菌药物处方、医嘱实施点评
最新回复
(
0
)