A.4 B.2 C.0 D.1
A.隔離度低,信號(hào)強(qiáng) B.隔離度低,信號(hào)弱 C.隔離度高,信號(hào)弱 D.隔離度高,信號(hào)強(qiáng)
A.90%,-105 B.95%,-105 C.95%,-100 D.90%,-100