【单选题】【消耗次数：1】
加快资本周转可以提高年剩余价值量和年剩余价值率，根本原因是（）。
①
预付可变资本增加了
②
实际发挥作用的可变资本增加了
③
剩余价值率提高了
④
产品的生产成本降低了
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相关题目
【单选题】
加快资本周转可以提高年剩余价值量和年剩余价值率，根本原因是（）
①
预付可变资本增加了
②
实际发挥作用的可变资本增加了
③
剩余价值率提高了
④
产品的生产成本降低了
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