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【单选题】
下列部件中，不属于计算机控制器的是(239)。A．指令寄存器IRB．程序计数器PC(指令指针寄存器IP)C．算A.
下列部件中，不属于计算机控制器的是(239)。 A.指令寄存器IR
B.
程序计数器PC(指令指针寄存器IP)
C.
算术逻辑单元ALU
D.
程序状态字寄存器PSW
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【简答题】主从型触发器可以避免 现象的产生。
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D.
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She's worried about the seminar.
B.
The man keeps interrupting her.
C.
She finds it too hard.
D.
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