（四）以委托方名义开具发票代委托方收取的款项。
Мерц резко сменил риторику во время встречи в Китае09:25，推荐阅读雷电模拟器官方版本下载获取更多信息
The incident happened at 18:15 local time (22:15 GMT) on Friday as the plane was arriving at El Alto's airport from the city of Santa Cruz, aviation officials said. It reportedly skidded off the runway and hit nearby vehicles.，详情可参考heLLoword翻译官方下载
- 父节点i的左子: 2*i+1, 右子: 2*i+2