说明：  请求页式存储管理方案// 页面淘汰算法采用 FIFO页面淘汰算法，// 并且在淘汰一页时，只将该页在页表中抹去。// 而不再判断它是否被改写过，也不将它写回到辅
(request page-storage management programs// pages out FIFO algorithm out pages algorithm// in an out, only to the page in the page table to erase.// Rather than to judge whether it be redrafted, it was not to return to the Commission)