贡献毛益率
参考答案：
是指贡献毛益总额占销售收入总额的百分比，或单位贡献毛益占单价的百分比。反映了产品为企业创利的能力。通常指产品贡献毛益率。
There is not much time left; So I'll tell you about it _____.
A．in detail
B．in brief
C．in short
D．in all
These g are for you.
These t (玩具) are mine.