题目内容

材料消耗定额中不可避免的消耗一般以损耗率表示，其公式为（）。

A. 损耗率=损耗量/材料消耗定额×100%
B. 损耗率=损耗量/净用量×100%
C. 损耗率=损耗量/（净用量十损耗量）× 100%
D. 损耗率=损耗量/（净用量一损耗量）×100%

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