Know the cost accounting, food materials and food nutrition knowledge.

懂得成本核算，食物原料及食品营养知识。

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If cost accounting is performed only at the mine level and the workshop level, it would be not easy to know the consumption of bulk raw materials and consumables in a mechanized open pit mine.

只进行矿、车间二级核算，对于机械化的露天矿山，无法分析清楚大宗原、燃物料的消耗情况。

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