首页
登录
职称英语
[originaltext] GPS stands for the Global Positioning System. It refers to a
[originaltext] GPS stands for the Global Positioning System. It refers to a
游客
2024-02-07
88
管理
问题
GPS stands for the Global Positioning System. It refers to a system of satellites and receivers that allow people and devices to detect their precise location on the earth. The heart of the system relies on 24 satellites that orbit the earth twice per day. Devices that are equipped with GPS equipment receive transmissions from at least a few of the satellites and are able to collect very precise positioning data. The first GPS satellite was launched in 1974 and the 24th was launched in 1994. The system is operated by the United States Department of Defense and the use of the system is free for anyone. New satellites are periodically launched to replace aging ones. As the technology has improved, the cost of GPS devices has greatly declined while the accuracy has increased. Small portable GPS receivers have become very affordable, and the accuracy is amazing. Accuracy varies based on various factors, but it can be as good as a few meters! Land-based supplementary devices can be used to improve accuracy if higher precision is required. The application of the GPS is very broad, and as the prices come down the number of uses is increasing. Portable GPS devices are used by fishermen to help them sail around the wild. Many new cars are being equipped with GPS systems to help drivers with finding directions. The military uses GPS to guide cruise missiles to pre-specified targets.
16. According to the passage, what is the most important part of the global positioning system?
17. Which aspect of the GPS is emphasized by the speaker?
18. According to the passage, why is the use of GPS increasing?
选项
A、Because it provides precise direction.
B、Because it is affordable to ordinary users.
C、Because it is the trend of the century.
D、Because it is portable for anyone.
答案
B
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3430977.html
相关试题推荐
[originaltext]Thecomputervirusisanoutcomeofthecomputerovergrowthi
[originaltext]WeddingsintheUnitedStatesvaryasmuchasthepeopledo.
[originaltext]Whenyouturnontheradio,youhearanadvertisement.Wheny
[originaltext]Whenyouturnontheradio,youhearanadvertisement.Wheny
[originaltext]W:Well,John,howwasyourvacation?Didyouvisitalltheplace
[originaltext]M:Hi,Iamgoingdoortodoortonighttotellpeopleaboutthes
[originaltext]M:Hi,Iamgoingdoortodoortonighttotellpeopleaboutthes
[originaltext]M:Hi,Iamgoingdoortodoortonighttotellpeopleaboutthes
[originaltext]W:Ineedacarthisweekend,butminehasbrokendown.M:I’ms
[originaltext]W:Ineedacarthisweekend,butminehasbrokendown.M:I’ms
随机试题
Readthispassageandthesentences.ChoosethebestsentencefromthelistA—G
[originaltext]M:Kathy,chaostheoryseemstobeabranchofphysicsormathema
UsingtheMindtoFightDiseasesA)Psychologyhasanew
Justlastweek,forexample,theWorldHealthOrganization(WHO)announcedthed
下列有关涂膜防水的厚度要求中,哪条不正确?()A.合成高分子防水涂膜在Ⅰ级防
尽职调查认为符合投资要求的企业与项目,项目投资经理编写完整的( )。A.投资建
与水液代谢关系最密切的脏腑是A:脾、胃、肝 B:肝、胆、肾 C:肝、肺、脾
各种运输方式内外部的各个方面的构成和联系,就是( )。 A.运输系统
(2021年12月真题)《证券期货投资者适当性管理办法》第十五条规定,经营机构应
医师被医疗机构限制处方权的情形是( )。A.休病假期间 B.参加离岗培训期间
最新回复
(
0
)