单选题光纤WDM中的中同轴电缆1800路FDM模拟技术,每路电话()。A2kHzB4kHzC6kHzD8kHz
单选题
光纤WDM中的中同轴电缆1800路FDM模拟技术,每路电话()。
A
2kHz
B
4kHz
C
6kHz
D
8kHz
参考解析
解析:
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