首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
A、The user’s position. B、The speed of the satellites. C、The distance to destination. D、The information to the earth. A根据录音最后一句“一
A、The user’s position. B、The speed of the satellites. C、The distance to destination. D、The information to the earth. A根据录音最后一句“一
admin
2016-12-22
54
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://kaotiyun.com/show/PZY7777K
0
大学英语四级
相关试题推荐
InLondon,overhalfofthehomesbuiltbetween1919and1980hadonegarage.Butmanyarebecomingneedless.Between2002and2
中国政府非常重视环境保护方面的法律法规建设(formulation),而且已经将环境保护纳入到了法律范畴(orbit)内。迄今为止,已经颁布(promulgate)了环保方面的五个特别法和九个自然资源法。另外,国务院(theStateCouncil)已
SimplifiedChineseorTraditionalChinese?1.有些人建议恢复使用繁体中文2.有些人则认为应继续使用简体中文3.我的看法……
Politicsisanemotionalbusiness.Still,manypeoplefoundthemselvesunusuallymovedbythehistoricpresidentialinauguration
A、Apoliceman.B、Mr.Blake’soldfriend.C、Aprisonofficial.D、Arunawaycriminal.D细节题。文章第二段提到,Blake先生从和中年男子的谈话中得知,这人是一个越狱的逃犯。
A、Highway40.B、Highway14.C、Highway90.D、Highway19.B细节题。男士说他们从14号高速公路离开Denver,而没有走应该走的90号高速公路。
A、GiveBobaphonecall.B、GoandpickBobup.C、GoandlookforBob.D、WaitforBob.D推理题。女士推测Bob可能遇上交通堵塞,建议再给他几分钟。因此,他们会等Bob。对
A、Sheoftenpracticestakingnotes.B、Sheoftenpracticesoilingthegate.C、Sheoftenpracticessinginghighnotes.D、Sheoften
A、TheyallowedhimtocometoEnglandimmediately.B、Theythoughtheshouldgoabroadasachild.C、Theywerereluctantuntilth
Backintheday,agoodreportcardearnedyouaparentalpatontheback,butnowitcouldbemoneyinyourpocket.Experiments
随机试题
询价对象有下列()情形之一的,中国证券业协会应当将其从询价对象名单中去除。 Ⅰ.不再符合《证券发行与承销管理办法》规定的条件 Ⅱ.最近12个月内因违反相关监管要求被监管谈话3次以上 Ⅲ.未按时提交年度总结报告 Ⅳ.最近12个月没
万某,慢性菌痢患者,用保留灌肠治疗,操作过程正确的是
产生药物副作用是由于
14岁男孩,平素喜踢足球,近1周右小腿上端前侧疼痛。查体:右小腿上端前侧隆起,皮肤无红肿发热及静脉怒张,压痛明显。X线片示胫骨结节骨骺增大、致密。应首先考虑的诊断是胫骨结节
被告人江某与被害人郑某是同一家电脑公司的工作人员,二人同住一间集体宿舍。某日,郑某将自己的信用卡交江某保管,3天之后索回。一周后,郑某发现自己的信用卡丢失,到银行挂失时,得知卡上1.5万元已被人取走。郑某报案后,司法机关找到了江某。江承认是其所为,但对作案
某大型商业大厦建设工程项目,业主与施工单位及监理单位分别签订了工程施工合同和委托监理合同。工程开工后曾发生下列事件。1.在工程的基础施工中,由于施工班组的违章作业,使经过监理人员检验合格的基础钢筋出现位移质量事故,在混凝土浇筑不久后,被监理方发现,
消防丁程设备和材料进场验收,重点关注(),保管时要满足防潮,防霉变,防高温和防强磁场等特殊要求。
授予专利权的发明或实用新型应当不属于现有技术。现有技术是指申请日以前()的技术。
已知向量组(Ⅰ)α1,α2,α3,α4线性无关,则与(Ⅰ)等价的向量组是()
Wherewastheletterprobablyplacedmanyyearsago?
最新回复
(
0
)