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
57
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:http://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
WhatisthemainpurposeofBrown’sremarks?[br][originaltext]Goodevenin
NewspapersandtelevisionreportsaroundtheworldshowAfricaasacontinen
Adultsaregettingsmarterabouthowsmartbabiesare.Notlongago,researc
有限责任公司型股权投资基金作出增资或者减资决议,必须经代表()以上表决权的
关于企业自由现金流折现模型,以下表述错误的是( )A.企业自由现金流是指公司在
上市公司出现()情形可以向证券交易所申请退市。 ①上市股东大会决议主动撤回其
脂溶性药物从胃肠道吸收,主要是通过A.易化扩散吸收 B.主动转动吸收 C.简
某市中学利用暑假对教学楼、科技楼、实验楼、学生宿舍楼和厨房餐厅进行加固维修,为确
企业在建立虚拟库存时,由于期货市场采用的是保证金交易机制,通常只收取交易总额的(
以下关于商业贿赂行为的叙述正确的是A.任何单位或个人不得在销售或购买商品时收受或
最新回复
(
0
)