1. [单选题]实现虚拟页式存储管理的硬件基础是
A. 缺页中断机制
B. 配置快表
C. 设置环保护位
D. 建立内核、用户态标志位
2. [单选题]M．Jackson suggested the data structure oriented software design method．Which of the following structure can be introduced by using input data structure?
A. algorithm structure
B. procedure structure
C. code structure
D. program structure
