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阅读下面一题及解答过程，请判断是否正确？若不正确，请指出错在哪一步？并写出正确的解答过程． 化简： a+ ab ab +b + ab -b a- ab a+ ab ab +b + ab -b a- ab = ( a ) 2 + ab ab + ( b ) 2 + ab - ( b ) 2 ( a ) 2 - ab a ( a - b ) b ( a - b ) + b ( a - b ) a ( a - b ) = a b + b a = (a+b) ab ab
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【单选题】在8086最小模式下，执行“INAL，n”指令时，M/IO#、WR#、RD#的信号电平依次为（）。
A.
0、0、l
B.
0、三态、0
C.
0、1、0
D.
l、l、0
【简答题】Tan δ = ∞ ,表示材料为理想( ),能力全用于流动损耗。
【简答题】SECTION C Directions: Complete the following passage by filling in each blank with ONE word that best fits the context. How much paper do you use every year? Probably you can’t answer this question qu...
【简答题】Section C (12 marks) Directions: Complete the following passage by filling in each blank with one word that best fits the context. Parents are busy people. If they are working, they are usually not at...
【单选题】下列指令中，有语法错误的是( )。
A.
MOV[SI]，[DI)
B.
INAL，DX
C.
JMP WORD PTR[BX+8]
D.
PUSH WORD PTR20[BX+SI-2]
【简答题】SECTION C ( 12 points ) Directions: Complete the following passage by filling in each blank with one word that best fits the context. In Glasgow, Scotland, a young lady, like a lot of s today, got...
【简答题】SECTION C Directions: Complete the following passage by filling in each blank with ONE word that best fits the context. The Internet has become part of young people’s life. A 48._________ shows that 3...
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