【单选题】【消耗次数：1】
下面指令执行后，改变AL寄存器内容的指令是?
①
TEST AL，02H
②
OR AL，AL
③
CMP AL，BL
④
AND AL，BL
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【单选题】
执行下列指令序列后，正确的结果是（ ） MOV AL，81H ADD AL，AL ADC AL，AL
①
AL=05H
②
AL=204H
③
AL=04H
④
AL=205H
【单选题】
检查二个无符号数的关系，若要实现AL≥BL时分支去LOP1处，那么在“CMP AL，BL”指令后应跟的分支指令是（ ）
①
JNC LOP1
②
JA LOP1
③
JC LOP1
④
JGE LOP1
【单选题】
8086/8088指令OUT??80H，AL表示( )?
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将80H送给AL
②
将80H端口的内容送给AL
③
将AL的内容送给80H端口
④
将AL内容送给80H内存单元
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