【单选题】【消耗次数：1】
边际贡献率是（）
①
边际贡献/销售单价
②
边际贡献总额/销售单价
③
单位边际贡献/销售单价
④
单位边际贡献/销售收入总额
参考答案：
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相关题目
【多选题】
关于边际贡献率的公式中，正确的有（ ）。
①
边际贡献率＝边际贡献总额/销售收入
②
边际贡献率＝单位边际贡献/单价
③
边际贡献率＝1－变动成本率
④
边际贡献率＝单位变动成本/单价
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