单项选择题

系统抖动是指( )。 A.
使用机器时,造成屏幕闪烁的现象 B.
刚被调出的页面又立即被装入所形成的频繁装入调出的现象 C.
系统盘有问题,造成系统不稳定的现象 D.
由于主存分配不当,偶然造成主存不够的现象

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