多选题常见的DCE设备有（）.A终端主机B广域网交换机C路由器DModemECSU/DSU（Channel Service Unit/Data Service Unit）
多选题
常见的DCE设备有（）.
A
终端主机
B
广域网交换机
C
路由器
D
Modem
E
CSU/DSU（Channel Service Unit/Data Service Unit）
参考解析
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