单项选择题
A.SHR AL，l B.MOV AL，64H C.SHL AH，CL D.MOV AL，BX
A.CF B.SF C.ZF D.OF
A.1100 0101B B.1001 1001B C.0111 1101B D.0111 1100B
A.N十1 B.N C.lgN/lg2 D.21gN/lg2
A.00000H～003FFH B.00000H～007FFH C.0F000H～0FFFFH D.00000H～0FFFFH
A.低功起 B.转换速度高 C.转换精度高 D.接口连接线少
A.CODE SEGMENT B.DATA SEGME~T C.STACK SEGMENT ‘STACK’ D.MAIN PROCFAR
A.4 B.8 C.12 D.16
A.76H B.98H C.9876H D.6789H
A.浏览器服务 B.收发电子邮件 C.文件传输 D.远程登录
A.Intel 8255A B.Intel 8253 C.74 LS138 D.74 LS139