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
75
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
[originaltext]Ourcompanyisactiveinworldmarketsandweemployjustove
在唐代,一生被卷人“牛李党争”中,致使郁郁不得其志的诗人是()A.李白 B.李
下列属于中国古代商业建筑类型的一组建筑是:[2010-055]A.商铺、旅店、养
MDS的外周血常见粒细胞异常生成,除了A.嗜碱性粒细胞增多 B.幼稚粒细胞出现
A.胎盘植入 B.胎盘剥离不全 C.胎盘嵌顿 D.胎盘粘连 E.胎盘剥离
水痘的主要传播途径是:A.血液传播 B.虫媒传播 C.飞沫传播 D.消化道
既能够治疗血虚诸证,又能用于女子月经不调、经闭、痛经的药物是A.桃仁 B.红花
教师在户外体育活动中如何保障幼儿的安全?
城市垃圾的综合整治的主要目标是( )。A.减量化 B.资源化 C.无害化
婴儿Ⅲ°烧伤。第二个24小时每1%面积、公斤体重的额外补液量是( )。A.0.
最新回复
(
0
)