题目内容
以下叙述中是错误的________。
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若某机主频为100 MHz，每个指令周期平均包含2个机器周期，每个机器周期包含2个时钟周期。 (1)求该机平均指令执行速度。 (2)若频率不变，但每条指令平均包含5个机器周期，每个机器周期包含4个时钟周期，求平均指令执行速度。
在单总线结构的CPU中，连接在总线上的多个部件________。
_____(watch)over by guards with guns, the convicts raised their legs in unison and made their way to the edge of the highway.
Attempts to break up this old system _______(make ) in every presidential election in the past one hundred years.
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