可以实现内存管理，采用先来先服务算法，在淘汰一页时，只将该页在页表中修改状态位。而不再判断它是否被改写过，也不将它写回到辅存。-Memory management can be achieved using a first-come first-serve algorithm, in one out of only the page in the page table modify status bits. Rather than to judge whether it had been rew