单项选择题
A.mov al,7Out 70H,alIn al,71HB.in al,7C.mov dx,7In al,dxD.out 71H,7in al,70H
A.9680HB.968AHC.962AHD.952AH
A.076A:11B.076A:16C.076B:0D.无法确定