首页
登录
职称英语
In the early 1950s the researchers who produced the first clad glass opt
In the early 1950s the researchers who produced the first clad glass opt
游客
2023-10-16
35
管理
问题
In the early 1950s the researchers who produced the first clad glass optical fibers were not thinking of using them for communications.【C1】H __________, fiber optics was already a well-established commercial technology when the famous paper by Kao and Hockham, 【C2】__________(claim) the use of low-loss optical fibers for communication, appeared in 1966.The first low-loss silica fiber was described in 【C3】__________which appeared in October of 1970.The date of this publication is sometimes 【C4】__________(cite) as the beginning of the era of fiber communication.Although this development did receive 【C5】__________(consider) attention in the research community at the time, it was far from inevitable that a major industry would evolve.
The technological barriers appeared formidable because there were serious doubts as to 【C6】wh__________ these fiber components could ever be produced economically enough, but the market potential was very significant.【C7】__________(consequence), research and development activity expanded rapidly, and a number of important issues were 【C8】 re__________ during the early 1970s.During the middle and late 1970s, the rate of progress towards marketable products accelerated as the emphasis 【C9】__________(shift) from research to engineering.Fibers with losses 【C10】app__________ the Rayleigh limit of 2 dB/km at a wavelength of 0.8μm were produced.
By 1980 improvement in component performance, cost, and reliability led to major commitments on the part of telephone companies. [br] 【C7】
选项
答案
Consequently
解析
此句成分完整,用表示因果关系的副词consequently, 与上句的联系紧凑。
转载请注明原文地址:https://tihaiku.com/zcyy/3103720.html
相关试题推荐
Whatisatthetopofthelistofspeciesextinctions?[originaltext]Researchers
Intheearly1950stheresearcherswhoproducedthefirstcladglassoptical
Intheearly1950stheresearcherswhoproducedthefirstcladglassoptical
Intheearly1950stheresearcherswhoproducedthefirstcladglassoptical
Intheearly1950stheresearcherswhoproducedthefirstcladglassoptical
Intheearly1950stheresearcherswhoproducedthefirstcladglassoptical
Intheearly1950stheresearcherswhoproducedthefirstcladglassoptical
Intheearly1950stheresearcherswhoproducedthefirstcladglassoptical
Intheearly1950stheresearcherswhoproducedthefirstcladglassoptical
Intheearly1950stheresearcherswhoproducedthefirstcladglassoptical
随机试题
人们常说的道·琼斯指数通常是指道·琼斯工业平均指数。()A、正确B、错误A人们常说的道·琼斯指数通常是指道·琼斯工业平均指数。
Therearegreatimpedimentstothegeneraluseofastandardinpronunciatio
Peopleborninautumnlivelongerthanthoseborninspringandare【C1】___
TermsandCond
Thenewyearalwaysbringswithitaculturaltraditionofnewpossibilities
患者,男性,60岁,既往无便秘习惯,近1个月排便不畅,2天前腹痛、腹胀,停止排气
李老师对学生比较严格,但是受到学生的敬重,对李老师的做法认为正确吗?
驱虫谱最广的药物是A.南瓜子B.雷丸C.槟榔D.使君子E.川楝子
Thechangeinthatvillagewasmiraculou
施工现场规则是( )考虑消防通道。A.应 B.必须 C.可以 D.可不
最新回复
(
0
)