首页
登录
职称英语
[originaltext] People in most countries depend on communications technology
[originaltext] People in most countries depend on communications technology
游客
2023-07-29
64
管理
问题
People in most countries depend on communications technology more than ever before. One day in May, an accident forced millions of Americans to be silent. They had to live and work without the technology they depend on every day.
A telecommunication satellite experienced computer failure. The satellite, known as Galaxy Four, moved from its correct orbit and was unable to receive signals from Earth. A backup computer failed to turn on, and the satellite began to spin out of control.
Galaxy Four was launched in 1993. It cost two hundred fifty million dollars. Galaxy Four provided the major link for millions of pagers, credit card operations, company communications systems, and home satellite equipment. The satellite also was used to send television and radio broadcasts.
The telecommunication satellite failure created big problems for many companies. At least eight of the nation’s ten biggest paging companies depend on Galaxy Four. A pager is an electronic device that receives telephone messages. The pager makes a beeping sound when it receives one. Ninety percent of the nation’s forty-five million pagers lost service when Galaxy Four failed. Paging companies were unable to provide services to police department, doctors and other individuals.
The satellite failure affected many television and radio broadcasts. Thousands of computer users were unable to use the Internet.
A nearby satellite called Galaxy Six has replaced the Galaxy Four satellite. Signals for broadcasting companies are being sent through Galaxy Six. Another satellite, Galaxy Three-R, is replacing Galaxy Four for paging and other signals. Technical experts had to move each person’s satellite equipment to point to Galaxy Three-R. Each move takes about thirty minutes. Technicians say the moves must be exact to within less than a centimeter. They were able to restore service to most customers within a few days.
选项
A、Computer failure.
B、Clash of another planet with the satellite.
C、Wrong operation.
D、Designing mistakes.
答案
A
解析
转载请注明原文地址:https://www.tihaiku.com/zcyy/2879285.html
相关试题推荐
[originaltext]StrikesareverycommoninBritain.Theyareextremelyharmfu
[originaltext]Acommunitytheatreisanimportantpartofalmosteverycity
[originaltext]Acommunitytheatreisanimportantpartofalmosteverycity
[originaltext]Acommunitytheatreisanimportantpartofalmosteverycity
[originaltext]W:WhatdoyouthinkofJohn?M:Well,comparedtoBill,heisge
[originaltext]W:WhatdoyouthinkofJohn?M:Well,comparedtoBill,heisge
[originaltext]W:WhatdoyouthinkofJohn?M:Well,comparedtoBill,heisge
[originaltext]W:WhatdoyouthinkofJohn?M:Well,comparedtoBill,heisge
[originaltext]Manypeopledislikewalkingintothebankstandinginlongli
[originaltext]Manypeopledislikewalkingintothebankstandinginlongli
随机试题
ManagingMoneyImportantTips:1.Watchhowmuchyouspe
PeopleintheUnitedStatesinthenineteenthcenturywerehauntedbythepr
A.甲状腺呈对称、弥漫性肿大,腺体表面光滑,质地柔软,随吞咽上下移动 B.在肿
A、B、C、D四家公司于2010年1月分别对甲、乙、丙、丁公司进行同一控制下的重
A.来源鉴定B.性状鉴定C.显微鉴定D.理化鉴定E.生物鉴定鉴定中药质量的纯度和
Thechangeinthatvillagewasmiraculou
丈夫甲欲与乙离婚乙不同意丙建议甲在牛奶里投毒杀害乙甲听从了丙的建议把有毒的牛奶拿
下列各项,哪一项不是成瘾行为的特征?( )A.生理性依赖 B.社会性依赖
土地取得成本包括()。A:土地使用权出让金 B:城市基础设施建设费 C:土地
2018年7月14日,甲公司从乙公司购买了办公设备,合计20万元,双方约定以商业
最新回复
(
0
)