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.
匈牙利国家铁路公司（MÁV）首席执行官佐尔特·赫吉在社交媒体上宣布，重建后的150号铁路线上已经开始日常货运列车通行，并强调在恢复客运业务之前，必须通过真实货运运营来检验线路的各项技术与安全指标。 他表示，所有相关的测量和轨道测试结果均显示，该线路完全符合货运列车运行所需的基础设施条件及交通安全标准。
Мерц резко сменил риторику во время встречи в Китае09:25，推荐阅读heLLoword翻译官方下载获取更多信息
Premium Digital
，更多细节参见搜狗输入法下载
All subscribers are given regular data updates and
“The group administrator has a responsibility to ensure the chat serves its purpose and that things don’t get too out of hand,” Wesson says.。业内人士推荐同城约会作为进阶阅读