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.
“中国游”带火“中国购”。2025年，我国办理离境退税的境外旅客数量同比增长305%，退税商品销售额同比增长95.9%。
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She accused the PM of "rubbing up against the tech bros", adding: "We're giving away our kids to Silicon Valley to please Trump."