产音视频线、产拓展坞、产充电器、产充电宝、产办公外设，甚至还产耳机。
3. 重复步骤2直到堆大小为1
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位于伊拉克南部米桑省的哈法亚油田，现代化厂区整洁美观，400多口油水井、5个高压注水泵站、3个油气中心处理厂和1个天然气处理厂昼夜不停生产作业。人们很难想象，15年前这里还是一片荒无人烟的偏远油区。