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.
文件也提及哥倫比亞、圭亞那和厄瓜多等國，並警告這些國家正「成為區域安全威脅或易受中俄等域外勢力滲透」。
，推荐阅读下载安装 谷歌浏览器 开启极速安全的 上网之旅。获取更多信息
采访马怀龙，老马先跟记者“约法三章”：“第一，不能当着老人的面提我什么时候退休；第二，不能问我每月给老人花多少钱；第三，不能问我家住哪里。”面对记者满脸的疑惑，马怀龙取出两大串、一共49把钥匙，领着我们开始了一天的“串门”。，推荐阅读91视频获取更多信息
Britain has become the "most expensive place in the world" to build nuclear power plants, according to a government review of nuclear regulation.。爱思助手下载最新版本对此有专业解读