单项选择题
A.生产工人工资 B.外购原材料费用 C.外购燃料动力费用 D.固定资产折旧费
A.45% B.50% C.55% D.60%
A.37500 B.27272 C.18750 D.12500
A.100% B.40% C.80% D.55%
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