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
2023-07-07
78
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、The accuracy of GPS system.
B、The cost of GPS devices.
C、The weight of GPS devices.
D、The speed of information transmission.
答案
A
解析
转载请注明原文地址:http://tihaiku.com/zcyy/2814710.html
相关试题推荐
[originaltext]Inancienttimesthemostimportantexaminationswerespoken,
[originaltext]Inancienttimesthemostimportantexaminationswerespoken,
[originaltext]Inancienttimesthemostimportantexaminationswerespoken,
[originaltext]Atthebeginningofthe20thcentury,therailroadswereused
[originaltext]Goodmorning,everyone.Communityserviceisanimportantcom
[originaltext]Goodmorning,everyone.Communityserviceisanimportantcom
[originaltext]W:Oh!I’mfedupwithmyjob.M:Hey!There’saperfectjobfor
[originaltext]W:Oh!I’mfedupwithmyjob.M:Hey!There’saperfectjobfor
[originaltext]M:Mary,Ihopeyou’repackedandreadytoleave.W:Yes,I’mpac
[originaltext]M:Today’sabaddayforme!Ifelloffastepandtwistedmyank
随机试题
[originaltext]MostkindsofroseplantscomefromAsia.Butrosesarealso
Variationsamongstateinsurancelawscancauseproblemsforfamilies.Ify
Lastweek,speakersataprograminWashingtondiscussedusingnanotechnolog
表示改灭火器使用范围说法正确的是()。 A.表示该灭火器适用于扑救A类火灾、
规划人口规模100万人以上城市的重要功能区,应能( )到达高、快速路网。A.1
材料在恒定荷载作用下,其变形会随时间的延长而缓慢增加,此过程称为应力松弛。
(2018年真题)下列关于某资产评估机构因出具虚假评估报告可能承担法律责任的说法
(2020年真题)根据我国《个人外汇管理办法》,按账户性质区分,个人外汇账户分为
下列关于利润表项目之间关系的恒等式中,错误的是()。A.利润总额=营业利润
某施工企业按3/10,n/30的信用条件购入材料100万元。已知企业可以3%的年
最新回复
(
0
)