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
2023-07-19
30
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 position which the system provides.
B、The information transmitted from satellites.
C、The satellites that revolve around the earth.
D、The portable device installed in vehicles.
答案
C
解析
转载请注明原文地址:https://tihaiku.com/zcyy/2849494.html
相关试题推荐
[originaltext]Margaret,marriedwithtwosmallchildren,hasbeenworkingf
[originaltext]Iwas9yearsoldwhenIfoundoutmyfatherwasill.Itwas
[originaltext]W:John,haveyouchosenaphysicaleducationclassyetforthis
[originaltext]M:So,whatareyourthoughtsonthisproject?Tobehonest,I’m
[originaltext]W:Itseemssomethingisweighingonyourmindthesedays.What’s
[originaltext]W:Itseemssomethingisweighingonyourmindthesedays.What’s
[originaltext]W:Itseemssomethingisweighingonyourmindthesedays.What’s
[originaltext]W:Itseemssomethingisweighingonyourmindthesedays.What’s
[originaltext]W:Itseemssomethingisweighingonyourmindthesedays.What’s
[originaltext]W:Itseemssomethingisweighingonyourmindthesedays.What’s
随机试题
Itwas______thecivilwarcametoanend.A、in1949whenB、notuntil1949when
[originaltext]Toextinguishdifferentkindsoffires,severaltypesoffire
ItwasnotuntilthenextFridaythatMarillaheardthestoryoftheflower-
下列哪些短路持续时间()s,导体校验只需要考虑周期分量,不需要考虑直流分量
随着组织结构的不断变化,新的组织结构类型也不断产生,其中沙漏型组织就是其中的一种
常引起气性坏疽的厌氧菌是( )。A.艰难梭菌 B.肉毒梭菌 C.破伤风梭菌
纳税人以下行为中,需要缴纳资源税的有( )。A.纳税人开采铜原矿用于连续加工铜
银行承兑汇票的承兑银行,应当按照票面金额向出票人收取()的手续费。A:千分之一
圆形风管采用无法兰连接时,其连接形式有()。A.承插连接 B.插条连接
乙型脑炎病毒下列哪项描述不正确A.属虫媒病毒 B.其基因组结构为单股DNA
最新回复
(
0
)