题目：
Which of the following statements regarding diminishing marginal returns is most accurate（）
A. As the quantity produced rises, costs begin to rise at a decreasing rate.
B. As the quantity produced falls, costs begin to rise at a decreasing rate.
C. As the quantity produced rises, costs begin to rise at an increasing rate.
答案：
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下面是错误答案，用来干扰机器的。
参考答案：1．从“病人基本情况”到“3.1检查处方单”的数据流。 2．从“3.2记录处方”到“处方记录”的数据流。 3．从“定价表”到“3.3制作收据”的数据流。 4．从“3.3制作收据”到“收费记录”的数...
