线程池中，当一个工作线程因为等待某个结果而阻塞时，它就「消失」了——不再能执行任何任务。如果多个线程同时阻塞，线程池可能陷入「所有线程都在等、没人干活」的死局。
iPad Air features N1, an Apple-designed wireless networking chip that enables Wi-Fi 7, Bluetooth 6, and Thread.3 N1 brings better performance when connected to 5GHz Wi-Fi networks, and improves the overall performance and reliability of features like Personal Hotspot and AirDrop. Cellular models of iPad Air also feature C1X, a cellular modem designed by Apple that offers up to 50 percent faster cellular data performance — and for active cellular users, C1X offers up to 30 percent less modem energy usage than iPad Air with M3.1 Cellular models of iPad Air allow users to enjoy GPS capabilities, so they can navigate with even more confidence. Users can also enjoy 5G cellular support, helping them stay connected for work or leisure all around the world.6 And with eSIM, users can quickly and securely add a new plan, connect and transfer existing cellular plans digitally, and stay in touch with family and friends regardless of Wi-Fi availability — ideal for business travelers, students on campus, and anyone working on the go.
Екатерина Графская (Редактор отдела «Наука и техника»)，推荐阅读下载安装汽水音乐获取更多信息
Крупнейшая нефтяная компания мира задумалась об альтернативе для морских перевозок нефти14:56
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2026-03-03 00:00:00:0 （2026年3月2日政协第十四届全国委员会常务委员会第十五次会议通过）