A.1XEV-DO網(wǎng)絡(luò)提供分組數(shù)據(jù)業(yè)務(wù) B.CDMA20001X的語音業(yè)務(wù)
A.[0,255] B.[1,256] C.[0,65535] D.[1,65536]
A.[-1,0] B.[0,1] C.[-1,1] D.[-2,2]