单项选择题
A.AL=40HB.AL=20HC.AL=0C0HD.AL=0E0H
A.DS:BPB.SS:SPC.CS:PCD.CS:IP
A.JBE NEXTB.JNA NEXTC.JGE NEXT D.JAE NEXT
A.立即寻址B.直接寻址C.寄存器相对寻址D.寄存器寻址
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