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假设微处理器的主振频率为50MHz,两个时钟周期组成一个机器周期,平均三个机器周期完成一条指令,则它的机器周期是(12)ns,平均运算速度约为(13)MIPS。

  • A.10
  • B.20
  • C.40
  • D.100
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