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
44
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、Because it provides precise direction.
B、Because it is affordable to ordinary users.
C、Because it is the trend of the century.
D、Because it is portable for anyone.
答案
B
解析
题干询问全球定位系统的使用增加的原因。短文中指出,由于价格下降,所以使用者大量增加,故答案为B)。
转载请注明原文地址:https://tihaiku.com/zcyy/2844173.html
相关试题推荐
[originaltext]Areyousometimesalittletiredandsleepyintheearlyafte
[originaltext]M:Hi.Uh,haven’twemetbefore?Youlooksofamiliar.W:Yeah.
[originaltext]M:Hi.Uh,haven’twemetbefore?Youlooksofamiliar.W:Yeah.
[originaltext]M:Hi.Uh,haven’twemetbefore?Youlooksofamiliar.W:Yeah.
[originaltext]M:Hi,Donna,areyouinterestedingoingtoanartexhibitionon
[originaltext]M:Hi,Donna,areyouinterestedingoingtoanartexhibitionon
[originaltext]M:Hi,Donna,areyouinterestedingoingtoanartexhibitionon
[originaltext]M:Hi,Donna,areyouinterestedingoingtoanartexhibitionon
[originaltext]M:Hi,Donna,areyouinterestedingoingtoanartexhibitionon
[originaltext]M:Hi,Donna,areyouinterestedingoingtoanartexhibitionon
随机试题
PrimaryFunctionsoftheFamilyThefamilyisabasicu
______fromspace,theearth,withwater______seventypercentofitssurface,
Itis______stealingtotakeathingawaywithoutpermissionofitsowner.A、nothi
以下的选项中哪些是傅里叶变换的性质?()A.非线性 B.时移 C.频移 D
综合考虑安全和经济两个方面,隧道白天照明被划分为()五个区段。A.入口段
关于建立合格投资者制度的必要性,以下描述不正确的是()A.基金投资者通常处于信
分娩第一期护理哪项是错误的A.鼓励产妇少量多次进食 B.指导产妇每隔2~4h自
2020年,我国粮食种植面积11677万公顷,比上年增加70万公顷。其中,稻谷种
当机动车与非机动车分隔行驶时,双向()是最经济合理的。A.2~4条非机动车道
假定横墙增设构造柱GZ(240mm240mm),其局部平面如图11所示。GZ采用
最新回复
(
0
)