单项选择题

第9题

A、They represent people from virtually all walks of life
B、They have twenty-four different body shapes in total
C、They have more than twenty different hair textures
D、They are thin, tall, and unlike real human beings
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信宿是传输信号的物理媒介。 ( )

答案: 错误。信宿(Destination)在通信系统中指的是接收信息的终端设备或系统,而不是传输信号的物理媒介。物理媒介通常指...
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