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纳税人以委托方式出口货物的，应当按照国务院税务主管部门的规定办理委托代理出口手续，由委托方按规定申报办理出口退（免）税、免征增值税或者缴纳增值税；未办理委托代理出口手续的，由出口货物的发货人按规定申报缴纳增值税。
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It was not supposed to be used until they got to the Moon. It had no heat shield, so could not be used to re-enter the Earth's atmosphere. But it could keep them alive until they got there.，更多细节参见搜狗输入法下载
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2. 排序：将堆顶(最大值)与末尾交换，堆大小-1，重新调整堆