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
74
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、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
转载请注明原文地址:http://tihaiku.com/zcyy/2849496.html
相关试题推荐
[originaltext]W:Hi,Dan,[23]youknowwhichlabyoumissed?Youcanhavem
[originaltext]W:Hi,Dan,[23]youknowwhichlabyoumissed?Youcanhavem
[originaltext]W:Hi,Dan,[23]youknowwhichlabyoumissed?Youcanhavem
[originaltext]Whensomeonesays,"Well,IguessI’llhavetogoandfaceth
[originaltext]M:Doeseverythinglookrighttoyou?Iwantittobeperfect.W:
[originaltext]M:Doeseverythinglookrighttoyou?Iwantittobeperfect.W:
[originaltext]M:Doeseverythinglookrighttoyou?Iwantittobeperfect.W:
[originaltext]M:Doeseverythinglookrighttoyou?Iwantittobeperfect.W:
[originaltext]M:Doeseverythinglookrighttoyou?Iwantittobeperfect.W:
[originaltext]W:Hi,Peter.Nicetomeetyou!M:Hi.Youare?W:I’mLisa,[22]
随机试题
Theactivitiesoftheinternationalmarketingresearcherarefrequentlymuchbro
Competitionforadmissiontothecountry’stopprivateschoolshasalwaysbe
CreativeThinkingI.Factstobeknownaboutcreativethi
A.需获得伦理专家委员会(或主管部门)的批准 B.死亡家属有权获得赔偿 C.
原发性醛固酮增多症出现肌无力的原因是A.持续高血压 B.多尿、夜尿、尿比重低
3岁某男,急性腹泻2天,黄色水样便,少许黏液,伴左下腹痛及里急后重。大便常规:黄
某旅游商店在店堂告示中标明“售出商品,概不退换”。一游客在导游员的带领下购买该商
下列哪项是雌激素减少所导致的A.促钙和磷沉积作用减弱 B.促骨基质合成功能减弱
引起急性出血性结肠炎的病原体是A.新型肠道病毒70型 B.伤寒沙门菌 C.大
工程项目施工质量保证体系中的施工质量计划应根据本项目的项目质量目标和企业的(
最新回复
(
0
)