4、9HD)MOVAX,0809H11.VAR1EQUBYTEPTRVAR2VAR2DW0ABCDH┇SHLVAR1,1SHRVAR2,1上述两条指令执行后,VAR2字单元内容是( C )。A)0ABCDHB)0AB9AHC)55CDHD)559AH12.设AX=0BBCCH,CF=1ORAX,3CMCRCLAX,1上述三条指令执行后,AX中的内容是(A)。A)779FHB)779EHC)779DHD)7799H13.下列语句中能与“DA1DB32H,34H”语句等效的是(A)。A)MOVDAI,32HB)MOVDA