计算机的(请作答此空)直接反映了机器的速度，其值越高表明机器速度越快；运算速度是指CPU每秒能执行的指令条数，常用( )来描述。
- A.内存容量
- B.存取速度
- C.时钟频率
- D.总线宽度
正确答案及解析
正确答案
解析
本题考查应试者计算机性能评价方面的基础知识。
计算机的时钟频率直接反映了机器的速度，通常主频越高其速度越快。但是，相同频率、不同体系结构的机器，其速度可能会相差很多倍，因此还需要用其他方法来测定机器性能。
通常所说的计算机运算速度(平均运算速度)是指每秒钟所能执行的指令条数，一般用"百万条指令/秒"(MIPS，Million Instruction Per Second)来描述。
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