题目内容
As a result of these advantages, optical fiber communication systems are widely employed for applications （96）major telecommunications backbone （97） to Ethernet systems, broadband distribution, and general data networking.
提问人：雷雅芬发布时间：2021-05-23
A. including 包含 B. ranging from从。。。排列 C. consisting of由。。。组成 D. composing of 构成 A. structure 结构，体系 B. networking 网络化 C. infrastructure基础建设基础设施 D. connection 连接
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