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单选题
647. 天线选择电路选择提供最强接收信号的双工器和天线。应答信号的传输经过所选的双工器和天线。
A
The antenna select circuit chooses the diplexer and antenna that supplies the strongest receiver signal. The transmission of the reply signal goes through the selected diplexer and antenna .
B
The antenna select circuit chooses the router and antenna that supplies the strongest receiver signal. The transmission of the reply signal goes through the selected router and antenna .
C
The antenna select circuit chooses the router and antenna that supplies the strongest transmitter signal. The transmission of the reply signal goes through the selected router and antenna
答案解析
正确答案：A
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