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
2023-07-17
64
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, (27) 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
题干询问全球定位系统的核心部分是什么。短文中指出,该系统的核心部分是每天绕地球旋转两周的24颗卫星,故答案为C)。
转载请注明原文地址:http://tihaiku.com/zcyy/2844171.html
相关试题推荐
[originaltext]Itwasthesummerof1965.DeLuca,then17,visitedPeterBuc
[originaltext]Itwasthesummerof1965.DeLuca,then17,visitedPeterBuc
[originaltext]Petownersarebeingencouragedtotaketheiranimalstowork
[originaltext]Petownersarebeingencouragedtotaketheiranimalstowork
[originaltext]Petownersarebeingencouragedtotaketheiranimalstowork
[originaltext]W:I’mgladthatyouwinthesingingcontest.Theawardmoneymay
[originaltext]W:I’mgladthatyouwinthesingingcontest.Theawardmoneymay
[originaltext]W:I’mgladthatyouwinthesingingcontest.Theawardmoneymay
[originaltext]W:I’mgladthatyouwinthesingingcontest.Theawardmoneymay
[originaltext]Duringthepastdecade,therehasbeenamultifoldincreasei
随机试题
UnderethicalguidelinesrecentlyadoptedbytheNationalInstitutesofHealth,
Thesecretaryandmanager______verybusynow.A、isB、areC、wasD、wereA
[originaltext]I’malifelongtraveler.So,fromthetimeIwasnineyearso
【教学过程】 环节一:生活导入 【教师展示】教师课堂上展示三杯颜色深浅不一的红糖水。 【教师提问】猜想三杯红糖水的甜度大小?判断的依据是什么?并请学
B
采购所耗时间和经理最多的是()。 A.战略物品 B.一般物品 C
业主和供水、供电、供气、供热、通信、有线电视等单位之间,是()。A:供用合同关系
关键风险指标监测的()原则是指监控工作要能够反映操作风险全局状况及变化趋势,揭
城市轨道交通项目的最低资本金比例为()。A.20% B.35% C.10%
(2021年真题)2X20年度,甲公司作为政府推广使用的W产品的中标企业,以80
最新回复
(
0
)