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
2023-06-20
27
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/2766617.html
相关试题推荐
[originaltext]M:Whatdoyouthinkofmynewsweater,Tracy?W:Well.It’svery
[originaltext]W:(12)Idon’tthinkitreallymatterswhatyoureducationalbackg
[originaltext]W:(12)Idon’tthinkitreallymatterswhatyoureducationalbackg
[originaltext]W:(12)Idon’tthinkitreallymatterswhatyoureducationalbackg
[originaltext]W:MayIcomein?M:Comein,please.Doyouknowwhattimeitis
[originaltext]W:MayIcomein?M:Comein,please.Doyouknowwhattimeitis
[originaltext]W:MayIcomein?M:Comein,please.Doyouknowwhattimeitis
[originaltext]W:Mike,doyouhaveaminute?M:Oh,hi,Cathy.Sure.What’sup?
[originaltext]W:Mike,doyouhaveaminute?M:Oh,hi,Cathy.Sure.What’sup?
[originaltext]W:Mike,doyouhaveaminute?M:Oh,hi,Cathy.Sure.What’sup?
随机试题
WhoareNancyandJenny?[br][originaltext]Tutor NancyandJennyarepresenti
Alandfreefromdestruction,pluswealth,naturalresources,andlaborsupp
男性,48岁。反复上腹部隐痛,疼痛于进餐后1小时加重,有反酸胃灼热,3天前上述症
神曲的功效是A.消食和胃 B.消食化积,杀虫止痒 C.消食化积,发散风寒
请列出五种以上校外的课程资源。
下列各项,不是肝阳上亢证与肝火上炎证的共见症的是A.头晕头痛 B.面红目赤
肖某由于工作地点变化,欲将其自住商品住房出售,于2010年9月委托甲房地产评估机
根据所给图表资料回答问题 以下哪个月的汽车产量同比增速最低?()
按照我国《优先股试点管理办法》的有关规定,上市公司公开发行优先股应当()。A.采
诊断变异型心绞痛,下述哪项是错误的A.安静时可以发病 B.发作时心电图ST段明
最新回复
(
0
)