A.基數(shù)波長(zhǎng),偶數(shù)波長(zhǎng) B.偶數(shù)波長(zhǎng),基數(shù)波長(zhǎng) C.后16波前16波 D.前16波后16波
A.14dbm B.15dbm C.13dbm
A.-21dbm B.-28dbm C.-24dbm