单选题DSC呼叫序列中用于DSC帧同步的信号是（）。A选择性呼叫的格式符B点阵信号C定相信号D地址
单选题
DSC呼叫序列中用于DSC帧同步的信号是（）。
A
选择性呼叫的格式符
B
点阵信号
C
定相信号
D
地址
参考解析
解析：
暂无解析
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