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电信网由三大模块组成，分别是：基础网、支撑网和（）
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电信网由三大模块组成，分别是：基础网、支撑网和（）
A、星型网
B、令牌环网
C、局域网
D、业务网
时间：2021-09-01 19:37
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中兴TD考试
通信工程师
CMS专题
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D
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