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
2023-11-22
54
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 D.C. 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. Later in the 20th century as cables were laid across the ocean floor, this made communication with different continents possible, it was very expensive for people in the 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. When the private "baby bells" were allowed to operate, the prices of telephone service fell dramatically.
选项
A、Manual switchboards.
B、Reading manuals.
C、Electronic switchboards.
D、Voice switches.
答案
A
解析
转载请注明原文地址:https://www.tihaiku.com/zcyy/3209368.html
相关试题推荐
[originaltext]W:Nowweturntooneoftheintervieweestogiveusmoreinforma
[originaltext]W:[1]Eachyear,approximatelyonemillionstudentsdropoutof
[originaltext]W:[1]Eachyear,approximatelyonemillionstudentsdropoutof
[originaltext]W:[1]Eachyear,approximatelyonemillionstudentsdropoutof
[originaltext]W:[1]Eachyear,approximatelyonemillionstudentsdropoutof
[originaltext]W:Withsome10,000babyboomershittingretirementageeveryday
[originaltext]W:Withsome10,000babyboomershittingretirementageeveryday
[originaltext]W:Withsome10,000babyboomershittingretirementageeveryday
[originaltext]W:Whatyoupayforhealthinsuranceisincreasinglyacomplexwe
[originaltext]W:Whatyoupayforhealthinsuranceisincreasinglyacomplexwe
随机试题
Aresearchworkermight______thattheexistenceofsuchkindofdiseaseisduet
Ifyouthinkahigh-factorsunscreen(防晒霜)keepsyousafefromharmfulrays,y
【B1】[br]【B11】[originaltext]Tensofthousandsofthepoorestpart-timestu
某电压信号随时间变化的波形图如图所示,该信号应归类于: A.周期信号 B.数
冷凝集试验正常参考值是A.
唾液的pH范围在A.5~7 B.5.6~7.6 C.6~7 D.6.5~7
某高层综合楼,室内、外消火栓的设计流量均为20L/s,自动喷水灭火系统的设计流量
__________把事件的共有特征、本质属性都抽取出来,并对于其不同的、不能反
石油危机、资源枯竭等造成原材料、能源价格上升,从而导致一般物价水平上升,这种通货
对4种食品抽样进行真菌检验,结果如下表所示: 若X检验的结果为P<0.01且
最新回复
(
0
)