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
85
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
【B1】[br]【B5】A、digitsB、formsC、devicesD、menusC从前面的electronic可知,此处只能选devices
维拉帕米的药理作用是A.增加心肌收缩力 B.直接抑制Na内流 C.降低窦房结
检索国内外标准文献信息的工具很多,主要分为纸质版、光盘版和网络版3种。()
在进行财务管理体制设计时,应当遵循的原则有()。A.明确分层管理思想 B.与现
服务器的部署是网络规划的重要环节。某单位网络拓扑结构如图3-2所示,需要部署V
(2020年真题)为了帮助精神病患者老张出院之后在社区进行康复,社会工作者小王来
对于肝病,“见其色而不得其脉”是指 A.面色青,脉浮 B.面色青,脉缓 C
直接作用于中枢神经系统,使之兴奋或抑制,连续使用后能产生身体依赖性的药品是A.麻
信用货币具有强制性表现为()。A.与黄金完全脱离 B.信用货币实际上是
患儿,男,3岁,生后半年发现智能落后,反复惊厥,且尿有鼠尿味,体检:目光呆滞,毛
最新回复
(
0
)