单项选择题
A.60Ms B.180Ms C.240Ms D.300Ms
A.EIT1F B.CE1B C.CE1BB D.EIGMF
A.bANdwidTh dOwNsTreAM MAxiMUM B.bANdwidTh UPsTreA MAssUred C.bANdwidTh UPsTreA Mfixed D.bANdwidTh UPsTreAM MAxiMUM