在页式存储管理系统中,每当CPU要形成一条有效地址时都要查页表,这一工作是由以下_____实现的。
A. 硬件
B. 操作系统
C. 查表程序
D. 存取控制程序
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系统抖动现象的发生是由_____引起的。
A. 置换算法选择不当
B. 交换的信息量过大
C. 内存容量不足
D. 请页式管理方案
在请页式存储管理系统中,若逻辑地址中的页号超过页表控制寄存器中的页表长度,则会引起_____。
A. 输入、输出中断
B. 时钟中断
C. 越界中断
D. 缺页中断
在请页式存储管理系统中,若所需的页不在内存,则会引起_____。
A. 输入、输出中断
B. 时钟中断
C. 越界中断
D. 缺页中断
Complete the passage with the appropriate words or expressions in the box. Change the form when necessary.vanishviciouscyclemeaninglessmiserabledebtstrive forbr content withkeep up withderive frompoke fun atcome into beingout of debtmost of allDo you worry that others might _____1_____ you if what you wear is too old fashioned or your gadgets _____2______? If you do, you are not alone. For concern about _____3_______ the Joneses is widespread. In a way, this is not surprising, for we are social animals and ____4______ social approval comes naturally to us. Yet it is easy to take things too far. Conspicuous consumption, spending on expensive items to impress others, can get out of control, leading us into ____5_____ and making us feel _____6______. It can trap us in a _______7_________ that is never ending. We shall probably never reach a point where the desire to show off ______8______ altogether, but we need to learn to be a little bit more ________9______ what we already possess.