下列哪些不是请求分页存储管理系统的页表项的内容。( )
A.块号
B. 辅存地址
C. .状态位
D. 起始地址
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时钟置换算法适用于()存储管理
A. 分页
B. 可变分区
C. 请求分段
D. 请求分页
What _________you make the wrong decision?
A. for
B. as
C. if
D. unless
You can cut ____________ on the number of ads and still reach more people.
A. down
B. up
C. over
D. about
I think you may think that present is a series of process undergoing change ______better.
A. for
B. to
C. at
D. by