A controlled deorbit requires the use of several core systems, including those for communications, power, and avionics. Some of the ISS machinery was not specifically certified to perform in a depressurized environment. (NASA believes that critical systems would remain operable, based on technical analyses, and emphasizes that many of these systems are already used in vacuum.) Another thing to worry about: the ISS losing control over its orientation in space. The spacecraft could start tumbling, flipping the station’s solar arrays away from the sun, taking the primary source of power with it.
由于车辆未配备外置机械应急拉手，车门无法从外部开启，驾驶员最终因车辆起火燃烧导致火烧死亡。成都公安此前已认定驾驶员因酒驾与严重超速承担事故全部责任。
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Data processing agreement
习近平总书记深刻指出，“组织东部地区支援西部地区，而且大规模长时间开展这项工作，在世界上只有我们党和国家能够做到，这就是我们的政治优势和制度优势。”
siftDown(arr, n, largest); // 递归下沉