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
2024-02-19
23
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. (26) 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. (27) 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. (28) 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.
26. According to the passage, what stands at the center of the global positioning system?
27. Which aspect of the GPS is emphasized by the speaker?
28. 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:https://tihaiku.com/zcyy/3465759.html
相关试题推荐
[originaltext]W:Thepianosoundsterrible.M:IwishIcouldaskformymoney
[originaltext]W:Thepianosoundsterrible.M:IwishIcouldaskformymoney
[originaltext]W:Thepianosoundsterrible.M:IwishIcouldaskformymoney
[originaltext]W:Thepianosoundsterrible.M:IwishIcouldaskformymoney
[originaltext]W:Thepianosoundsterrible.M:IwishIcouldaskformymoney
[originaltext]ManyfamiliesintheUnitedStateshavealargerincomethan
[originaltext]ManyfamiliesintheUnitedStateshavealargerincomethan
[originaltext]ManyfamiliesintheUnitedStateshavealargerincomethan
[originaltext]"Gototheplaygroundandhavefun."Parentswilloftensayt
[originaltext]"Gototheplaygroundandhavefun."Parentswilloftensayt
随机试题
WhichofthefollowingsentencesisINCORRECT?A、Every100householdshave93tel
IiisabsolutelyessentialthatWilliam______hisstudyinspiteofsomelearni
[A]confirmation[I]speculate[B]prudent[J]preoccupied[C]voiced[K]rep
Ourworldisfilledwithsoundsweneverhear.Thehumanauditory(听觉的)rangeis
教学过程 Step1Lead-in 1.GreetingtoSs. 2.ShowacartoonSteamboatWillieto
两个口号论争中的两个文学口号指的是()A.“国防文学”和“大众文学” B.“
阅读下列说明,回答问题1至问题3,将解答填入答题纸的对应栏内。【说明】某单位公用
家长学校
中央型肺癌是A.生长在叶、段以下的支气管 B.生长在段以上的支气管 C.远离
细胞分泌化学信号的主要作用方式不包括A.内分泌 B.旁分泌 C.突触传递
最新回复
(
0
)