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试说明影响智力发展的各种因素和作用。

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请求分页管理系统中,假设某进程的页表内容如下表所示: 页号 页框(Page Frame)号 有效位(存在位) 0 101H 1 1 — 0 2 254H 1 页面大小为4KB,一次内存的访问时间是100ns,一次快表(TLB)的访问时间是10ns,处理一次缺页的平均时间为108ns(已含更新TLB和页表的时间),进程的驻留集大小固定为2,采用最近最少使用置换算法(LRU)和局部淘汰策略。假设(1)TLB初始为空;(2)地址转换时先访问TLB,若TLB未命中,再访问页表(忽略访问页表之后的TLB更新时间);(3)有效位为0表示页面不在内存,产生缺页中断,缺页中断处理后,返回到产生缺页中断的指令处重新执行。设有虚地址访问序列2362H、1565H、25A5H,请问: 基于上述访问序列,虚地址1565H的物理地址是多少请说明理由。

Questions 21 to 23 are based on the following news. At the end of the news item, you will be given 15 seconds to answer the questions. Now listen to the news. The Boeing representative in Hong Kong, Ivy Takahashi said ______.

A. China has delayed its purchasing plan because of the collision of a US spy plane and Chinese fighter jet last month
Boeing has got confirmation of the orders from Beijing
C. Boeing will not cut its production despite of its economic tension
D. China’s plan to purchase the planes appears to be on track

Why doesn’t the woman take the last plane in the evening

A. Because it’s fully hooked.
Because it’s too late.
C. Because it’s too expensive.

Questions 21 to 23 are based on the following news. At the end of the news item, you will be given 15 seconds to answer the questions. Now listen to the news. The U. S. aircraft manufacturer Boeing Company is denying report that ______.

A. China’s going to reduce the airliners to be purchased from Boeing
B. China’s plan to buy Boeing jetliners has been suspended because of political tension between Washington and Beijing
China wants to increase its buying
D. China will move on with its purchasing plan

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