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【单选题】
零件加工表面上具有较小间距的峰谷所组成的微观几何形状特性称为表面
A.
光洁度
B.
平整度
C.
光亮度
D.
粗糙度
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A.
want to be flattered
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A.
cost
B.
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C.
pay
D.
spend
【简答题】有一个虚存系统,某进程占用 3 个内存块,开始时内存为空,执行如下访问页号序列后: 5 , 0 , 1 , 2 , 0 , 3 , 0 , 4 , 2 , 3 , 0 , 3 , 2 , 1 , 2 , 0 , 1 , 5 , 0 , 1 (1) 采用先进先出( FIFO )页面置换算法,面页置换次数 (1) 是多少? (2) 采用最近最久未使用( LRU )页面置换算法,面页置换次数 (2) 是...
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