某厂商在短期内保持资本(K)的投入量不变而改变劳动( L ) 要素投入量,则生产的第二阶段应该是( )
A.
边际产量曲线 M P L 高于平均产量曲线 A P L
B.
总产量曲线 T P L 处于递增速率上升阶段
C.
总产量曲线 T P L 处于递减速率上升阶段
D.
开始于 AP L 的最高点,终止于 MP L 与横轴的交点
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