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
78
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:https://tihaiku.com/zcyy/2784755.html
相关试题推荐
[originaltext]Chinesegovernmentisreadytocarryoutitsfirstnationals
[originaltext]Chinesegovernmentisreadytocarryoutitsfirstnationals
[originaltext]InasuburbinnorthernJohannesburgSouthAfrica,LorraineM
据报道,北京市教委(BeijingMunicipalCommissionofEducation)将对高考(thecollegeadmissi
让人更为震惊的是,大学生浪费的食物数量是全国平均量的两倍。Whatismoreastonishingisthatcollegestudentsw
一项调查结果显示,许多大学生每日阅读时间不足1小时,而上网时间却超过了4小时。Accordingtoasurvey,manycollegestude
[originaltext]Sinceaunionrepresentativevisitedourcompanytoinformus
[originaltext]Whenpeoplecareforanelderlyrelative,theyoftendonotu
[originaltext]Whenpeoplecareforanelderlyrelative,theyoftendonotu
[originaltext](16)Therearemanycommonlyheldbeliefsabouteyeglassesan
随机试题
Whypeoplework?Undoubtedlyyouhaveperiodicallyaskedyourselfthesame
[originaltext]Ifyou’vebeenoncampusforverylong,I’mcertainthatyou’
Clearlyifwearetoparticipateinthesocietyinwhichwelivewemustcom
Collagen(胶原蛋白)supplementsA)Anysoupmakerworththei
A.1129W B.1181W C.1230W D.1476W
预防接种的目的()A.提高人群易感性 B.降低人群敏感性 C.提高人群免
对资源和环境的影响效果指标。对资源和环境的影响效果指标,主要有()等几类。A:
Thechangeinthatvillagewasmiraculou
磺酰脲类降血糖的作用机制不正确的是A:刺激胰岛B细胞释放胰岛素 B:降低血清糖
2017年末,某市住房总量为5000万平方米,其中经济适用住房400万平方米,商
最新回复
(
0
)