首页
登录
职称英语
Where was the first telephone service in America established? [br] [originaltex
Where was the first telephone service in America established? [br] [originaltex
游客
2024-10-12
55
管理
问题
Where was the first telephone service in America established? [br]
The first telephone service in North America began on the East Coast in the late 19th century. All of the calls arriving in New York were routed to the office of the early Bell Company. In turn, the Bell Company would switch the calls through a manual switchboard from New York to their destination for the charge of one penny per call. Later in the century, telephone services were established between Chicago and Boston and between Washington and Philadelphia. In 1910 the Bell Company changed from a privately held company to a publicly held corporation. The new company increased the number of telephone switchboards and introduced the use of electronic switches instead of manual operators. It was very expensive for people in rural areas of the west to set up phone service though. In order to lower the prices of the telephone services, the United States government forced the telephone company to allow local telephone companies to offer competing services. The telephone service that started in American over a hundred years ago has developed into the most sophisticated communications network in the world.
选项
A、Manual switchboards.
B、Reading manuals.
C、Electronic switchboards.
D、Voice switches.
答案
A
解析
在贝尔公司尚未publicly held以前,电话都是通过接线员(operators)人工手动转接(manualswitchboard)的方式来使电话接通。
转载请注明原文地址:http://tihaiku.com/zcyy/3797683.html
相关试题推荐
PaulWolfowitzhasbeeninvolvedina______.[br][originaltext]Thekeyc
Mr.WarrenChristopher[br][originaltext]SecretaryofStateWarrenChrist
Mr.WarrenChristopher[originaltext]SecretaryofStateWarrenChristopher
HowdidthemanspendhislastdayinLondon?[originaltext]Ihadspentmyl
Janethaseventuallydecidedtogoona[br][originaltext]M:I’mlongingtohe
Janethaseventuallydecidedtogoona[originaltext]M:I’mlongingtohearabo
Whatislikelytohappenastheresultoftheexpansion?[br][originaltext]
Whatislikelytohappenastheresultoftheexpansion?[originaltext]The
Howlonghasthemanbeenmissing?[originaltext](25)Thewifeofaretired
FromwhichcollegedidJeffersongraduate?[br][originaltext]ThomasJeffe
随机试题
Jeancouldbeaveryattractivegirlbutshe________toherclothes.A、paysnoa
[originaltext]Intoday’sthrow-awaysociety,dealingwiththecity’sgrowin
WheretoGetHealthierin2018A)Fromhotelsandcruisest
ThingstobeTaughtinEverySchoolI.Introduction:Importanceofstudents’
麻醉期间低血压的定义是()A.血压降低幅度超过麻醉前30%或血压降低达90m
患者女性,60岁。体质较差,普查发现并确诊为外阴鳞状细胞癌0期,对患者进行治疗方
油浸变压器灭火装置控制故障属于严重缺陷。
(____)kV及以上GIS母线隔离开关禁止采用与母线共隔室的设计结构。(A)1
A提示:此电路是组合逻辑电路(异或门)与时序逻辑电路(D触发器)的组合应用,电路的初始状态由复位信号RD确定,输出状态在时钟脉冲信号CP的上升沿触发。
一住店客人未付房钱即想离开旅馆去车站。旅馆服务员揪住他不让走,并打报警电话。客人
最新回复
(
0
)