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  现有8升、5升、3升的容器各一个，均无任何度量标记，其中8升的容器装满油，其他两个为空。要求用上述容器倒来倒去，分成两份4升的油。（内附实验报告）(Existing eight liters, 5 liters, each a 3-liter container, no any measure mark, eight liter container filled with oil, the other two are empty. Requirements for the container shuffling back and forth, divided into two four liters of oil.)