单项选择题
A.生产工人工资 B.外购燃料动力费 C.外购原材料费 D.固定资产折旧费
A.21.25% B.28.50% C.28.85% D.32.14%
A.20.00 B.20.2 C.20.8 D.22.2
A.-45.84 B.-1.57 C.27.76 D.42.55
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