- 搜标题
- 搜题干
- 搜选项
单项选择题
According to the experience curve, we can get that with the increase of total accumulated production of units, average unit cost of output______
A．increases first and then decreases
B．decreases first and then increases
C．keeps decreasing
D．keeps increasing
B．decreases first and then increases
C．keeps decreasing
D．keeps increasing
