【单选题】
数字通信系统中，一次群信号速率2048Kb/s，信号幅度2.37/75伏，其信号幅度可由___测量。
A. 万用表
B. 误码分析仪
C. 示波器
D. 频率计
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答案
C
解析
暂无解析
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C. （主干）光纤存在不同类型光纤接头对接。
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