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隐秘大佬的矿业征途姚雄杰是谁？这个问题放在十年前，恐怕资本市场知之者甚少。即便是今天，关于这位福建龙岩富豪的早年发迹史，外界依然知道的不多。，推荐阅读safew官方版本下载获取更多信息
The A/D bits exist entirely for the operating system's benefit. The Accessed bit tells the OS which pages have been recently used, enabling page replacement algorithms to choose pages to evict when memory runs low. The Dirty bit tells the OS which pages have been modified and must be written back to disk before eviction; clean pages can simply be discarded and re-read from disk later.