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
2024-02-01
86
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 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://tihaiku.com/zcyy/3413597.html
相关试题推荐
[originaltext]M:Ireallycan’tstandthemanymore!W:Who?Whathappened?M:Myr
[originaltext]M:ProfessorKennedyhasbeenverybusythissemester.AsfarasI
[originaltext]M:ProfessorKennedyhasbeenverybusythissemester.AsfarasI
[originaltext]M:ProfessorKennedyhasbeenverybusythissemester.AsfarasI
[originaltext]M:ProfessorKennedyhasbeenverybusythissemester.AsfarasI
[originaltext]M:ProfessorKennedyhasbeenverybusythissemester.AsfarasI
[originaltext]Somecountriesmayhaveoneuniformfishinglawcoveringthe
[originaltext]Somecountriesmayhaveoneuniformfishinglawcoveringthe
[originaltext]Whilesomepeopleseemedtobeblessedwithbeautifulandexp
[originaltext]GPSstandsfortheGlobalPositioningSystem.Itreferstoa
随机试题
WhileAmericancitiesaresynchronizinggreenlightstoimprovetrafficflow
Whydon’tbirdsgetlostontheirlongflightsfromoneplacetoanother?S
DealingwithCriticismA)Noonelikesgettingcriticism.
Inorderto______thesegoals,wehavetoworkevenharderthanbefore.A、accept
TipsforThoseWhoTravelAloneA)Whenitcomestotraveling,sometimes
根据以下材料,回答41-45题 Gettingbackintoexcer
生命中枢位于:A.中脑 B.下丘脑 C.脊髓 D.延髓
长期应用氯丙嗪治疗精神病最常见的不良反应是A:锥体外系反应 B:过敏反应 C
胃脘疼痛,嗳腐恶食,或吐不消化食物,大便不爽,舌淡红,苔厚腻,脉滑,证属A.脾胃
患者女,36岁。患风湿性心脏病10年,近来心悸、胸闷痛、气短、下肢水肿、尿少。数
最新回复
(
0
)