单项选择题
A.CCCH B.DCCH C.PCCH D.BCCH
A.PAING YPE 1 B.PAGING YPE 2 C.PAGING YPE 3
A.下行扩频码用来区分用户 B.下行扰码用来区分小区 C.上行扩频码用来区分用户