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
2019-07-18
68
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://kaotiyun.com/show/FSZ7777K
0
大学英语四级
相关试题推荐
BathingSuitsandSwimmingHabitsHaveChangedaLotOvertheYearsA)Haveyoupickedoutyourswimsuitforsummeryet?Someki
A、Becauseitkeptoutthewind.B、Becauseitblewoutthesmoke.C、Becauseitletinmorewindthanlight.D、Becauseitletinm
Antarcticaistheonlycontinentwheretherehasneverbeenwar.Nomilitaryactivityisallowedthereandscientificresearchi
Womenareonthevergeofoutnumberingmenintheworkforceforthefirsttime,ahistoricreversalcausedbylong-termchanges
Oceanographyhasbeendefinedas"Theapplicationofallsciencestothestudyofthesea".Beforethenineteenthcentury,s
Manyprivateinstitutionsofhighereducationaroundthecountryareindanger.Notallwillbesaved,andperhapsnotalldeser
Cryingishardlyanactivityencouragedbysociety.Tears,betheyofsorrow,anger,orjoy,typicallymakeAmericansfeeluncom
WorkingtoImprovetheConditionsofEvergladesNationalParkA)WhenmanypeoplethinkofFlorida,imagesofsandycoastlin
A、Theyaretoolighttobesteady.B、Theyhavecutoffsomeusers’toes.C、Theyareeasilybrokeninuse.D、Theyendangerjunior
A、Supportive.B、Opposed.C、Pessimistic.D、Neutral.A对话开头,男士说,美国众议院反对干细胞研究,时至今日,竟然还有人这么做真是令人难以置信。说明男士自己是支持干细胞研究的,故选A。
随机试题
全球性组织结构的基本组织形式为()
下列哪项是嗜铬细胞瘤最具特征性的临床表现
女性,66岁,因肺炎住院,既往有慢性肺源性心脏病病史,输液过程中突然出现呼吸困难、气促、咳嗽、咳出粉红色泡沫样痰。下列急救措施正确的是
锐器盒盛装以满()为宜。
FIDIC系列合同条件中,()主要用于发包人设计的或咨询工程师设计的房屋建筑工程和土木工程。
江苏现存下列遗迹中,与辛亥革命有关的有()。
执行完下列语句段后,i值为()。intf(f(1));{return((x>0)?x*f(x-1):2);}intI;I=f(f(1));
任何一种教育体制下,都存在着学生资质差异的问题。理想的教育体制,应该面向不同资质的学生,都提供相应的机会。但是,面对高考升学,面对社会对人才的遴选机制,我们常常是无奈地叹息。因此,天才对教育惟一可说的话,是古希腊哲学家第欧根尼的那句名言:“不要挡住我的阳光
外国侵略者通过不平等条约取得的特权中,按时间先后顺序排列应是()。①外国商船和军舰可以在长江各口岸自由航行②外国人可以在通商口岸开设工厂③可在通商口岸建立教堂④领事裁判权和片面最惠国待遇
Britain’seastmidlandswereoncethepictureofEnglishcountryside,aliveWithflocks,shepherds,skylarksandbuttercups--the
最新回复
(
0
)