A.TD覆蓋率 B.GSM語音質(zhì)量 C.手機綜合下載速率 D.網(wǎng)管統(tǒng)計TD網(wǎng)PS域掉線率
A.25% B.2% C.4% D.6%
A.3 B.10 C.20 D.30