首页
登录
职称英语
In the early 1950s the researchers who produced the first clad glass optical
In the early 1950s the researchers who produced the first clad glass optical
游客
2024-08-16
28
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. 8 μm 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以与上句的联系紧凑。
转载请注明原文地址:https://tihaiku.com/zcyy/3722027.html
相关试题推荐
Intheearly1950stheresearcherswhoproducedthefirstcladglassoptical
Intheearly1950stheresearcherswhoproducedthefirstcladglassoptical
Intheearly1950stheresearcherswhoproducedthefirstcladglassoptical
Intheearly1950stheresearcherswhoproducedthefirstcladglassoptical
Intheearly1950stheresearcherswhoproducedthefirstcladglassoptical
Intheearly1950stheresearcherswhoproducedthefirstcladglassoptical
Intheearly1950stheresearcherswhoproducedthefirstcladglassoptical
Intheearly1950stheresearcherswhoproducedthefirstcladglassoptical
Intheearly1950stheresearcherswhoproducedthefirstcladglassoptical
Thefarmproducedmorefoodthan______thoughtpossibleduringWorldWarII.A、eve
随机试题
TheGreekshaveasecondBattleof.Marathonontheirhands.Theiradversarie
关于施工准备阶段的环境保护监理工作,说法正确的有( )。A.增加设计交底,熟悉环
《隔离开关分合闸位置“双确认”改造技术规范》中姿态传感系统,传感器与开关的联合检
在进行组织结构诊断时要分析组织关系,应清楚()。A:某个单位应同哪些单位和个人发
资本主义经济危机是生产相对过剩的危机,这个“相对”的对象是 A.劳动者的社会需
人在每一瞬间,将心理活动选择了某些对象而忽略了另一些对象。这一特点指的是注意的(
自身财务规划能力强的客户适用的还款方式是()。A.等额本金还款法 B.等
A.毛茛科 B.木通科 C.豆科 D.马兜铃科 E.茜草科降香原植物属于
(2020年真题)某企业A部门采用一一对比法对4名员工进行绩效考核,考核情况如下
下列不属于绩效考核的功能的是()。A.管理功能 B.心理援助功能 C.监控
最新回复
(
0
)