问题如下图：
选项：
A. 
B. 
C. 
解释：
老师可以画图解释一下吗
NO.PZ2016010802000068 问题如下 Companies most likely have a well-finesupply function when the market structure is: A.oligopoly. B.perfecompetition. C.monopolistic competition. is correct.A company in a perfectly competitive market must accept whatever prithe market ctates. The margincost schele of a company in a perfectly competitive market termines its supply function.考点完全竞争市场特性解析在四类市场结构中，只有完全竞争市场的供给曲线是可以被定义描述的，它等于MC曲线大于AVC的那一段。注意到，只有完全竞争厂商才有MR=P所以MC=MR=P, 在MC曲线上， P与产量方能对应。但是对于其他类型的市场，P≠MR=MC,所以MC上点与产量对应不起来。所以只有完全竞争市场才存在这样的供给曲线。 题目问的明确的供应是啥意思
NO.PZ2016010802000068 问题如下 Companies most likely have a well-finesupply function when the market structure is: A.oligopoly. B.perfecompetition. C.monopolistic competition. is correct.A company in a perfectly competitive market must accept whatever prithe market ctates. The margincost schele of a company in a perfectly competitive market termines its supply function.考点完全竞争市场特性解析在四类市场结构中，只有完全竞争市场的供给曲线是可以被定义描述的，它等于MC曲线大于AVC的那一段。注意到，只有完全竞争厂商才有MR=P所以MC=MR=P, 在MC曲线上， P与产量方能对应。但是对于其他类型的市场，P≠MR=MC,所以MC上点与产量对应不起来。所以只有完全竞争市场才存在这样的供给曲线。 P与产量方能对应是什么意思？
NO.PZ2016010802000068 问题如下 Companies most likely have a well-finesupply function when the market structure is: A.oligopoly. B.perfecompetition. C.monopolistic competition. is correct.A company in a perfectly competitive market must accept whatever prithe market ctates. The margincost schele of a company in a perfectly competitive market termines its supply function.考点完全竞争市场特性解析在四类市场结构中，只有完全竞争市场的供给曲线是可以被定义描述的，它等于MC曲线大于AVC的那一段。注意到，只有完全竞争厂商才有MR=P所以MC=MR=P, 在MC曲线上， P与产量方能对应。但是对于其他类型的市场，P≠MR=MC,所以MC上点与产量对应不起来。所以只有完全竞争市场才存在这样的供给曲线。 其他三种为什么不可以被定义描述？
NO.PZ2016010802000068问题如下 Companies most likely have a well-finesupply function when the market structure is:A.oligopoly.B.perfecompetition.C.monopolistic competition. is correct.A company in a perfectly competitive market must accept whatever prithe market ctates. The margincost schele of a company in a perfectly competitive market termines its supply function.考点完全竞争市场特性解析在四类市场结构中，只有完全竞争市场的供给曲线是可以被定义描述的，它等于MC曲线大于AVC的那一段。注意到，只有完全竞争厂商才有MR=P所以MC=MR=P, 在MC曲线上， P与产量方能对应。但是对于其他类型的市场，P≠MR=MC,所以MC上点与产量对应不起来。所以只有完全竞争市场才存在这样的供给曲线。 什么叫做well finesupply function
NO.PZ2016010802000068问题如下Companies most likely have a well-finesupply function when the market structure is: A.oligopoly. B.perfecompetition. C.monopolistic competition. is correct.A company in a perfectly competitive market must accept whatever prithe market ctates. The margincost schele of a company in a perfectly competitive market termines its supply function.考点完全竞争市场特性解析在四类市场结构中，只有完全竞争市场的供给曲线是可以被定义描述的，它等于MC曲线大于AVC的那一段。注意到，只有完全竞争厂商才有MR=P所以MC=MR=P, 在MC曲线上， P与产量方能对应。但是对于其他类型的市场，P≠MR=MC,所以MC上点与产量对应不起来。所以只有完全竞争市场才存在这样的供给曲线。 是不是也是well fine因为图画的出
