首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
A、Millions of Americans began to doubt the efficiency of telecommunications. B、Millions of Americans sued(起诉)the telecommunicati
A、Millions of Americans began to doubt the efficiency of telecommunications. B、Millions of Americans sued(起诉)the telecommunicati
admin
2010-03-26
69
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、Millions of Americans began to doubt the efficiency of telecommunications.
B、Millions of Americans sued(起诉)the telecommunications company.
C、Millions of Americans were frightened by the accident and became silent.
D、Millions of Americans bad to live and work without the technology they depend on every day.
答案
D
解析
转载请注明原文地址:https://kaotiyun.com/show/N8k7777K
0
大学英语四级
相关试题推荐
SavingsareasimportantasinsurancetoprotectpeopleagainstlargefinanciallossesThepriceofinsuranceismainlyaffecte
A、Domuchresearchinmanyfieldsofscience.B、Understandpeopleinothercountriesbetter.C、BothAandBD、NeitherAnorBCW
ThepassagefocusesontheneedforAmericanstolearnforeignlanguages.LearningEsperantohasbeendemonstratedtohelpwith
Oneairlinechiefexecutiveofficer(CEO)wasthemasterofthepersonaltouch.Spendinghourswithhisemployeesandgettingto
A、Thedangersofattackingeachkindofwildlife.B、Thedangersofpollutingtheenvironment.C、Thedangersofstartingawar.D
A、56percent.B、96percent.C、24percent.D、28percent.B[听力原文]WhatpercentageofAmericancarsareproducedinDetroit?通过四个选项
Therearenowabout800000industrialrobotsaroundtheworld,andordersfornewrobotsinthefirsthalfof2007wereupare
TheRightAmountofEnergyWeallenjoybeingaroundpeoplewithenergy.Theyinspireus.Theyarestimulating,fun,andupli
Withmoreandmorelow-incomestudentspursuinghighereducation,anumberofcollegesare______.Applicantsforathleticmerit
随机试题
患者,男性,56岁。因高血压行输液治疗,输液过程中体温升高达38.6℃,伴有寒战,首先考虑
安全管理的10个特征是:()。
我国城市道路分为()。
银行向个人发放的、用于解决市民及其配偶或直系亲属伤病就医时的资金短缺问题的贷款是()。
房地产市场状况分析不包括()分析。
分层教学是因材施教原则的具体应用。()
公安机关作出吊销许可证及处()以上罚款的治安管理处罚决定前,应当告知违反治安管理行为人有权要求举行听证。
a与b的算术平均值为8.
Clearlyifwearetoparticipateinthesocietyinwhichwelivemustcommunicatewithotherpeople.Agreatdealofcommunicati
Whydidshechoosepsychology?
最新回复
(
0
)