单项选择题
A.log2m=log2n B.[log2m]=[=[log2n] C.[log2m]+1=[log2n] D.[log2m]=[log2n]+1
A.12 B.16 C.20 D.24
A.D<C B.R.DD<CS.C C.R.DD<CR.C D.S.DD<CR.C