Ching-He's grandparents first taught her about Chinese cooking.
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Ching-He's mother worked from home.
A. T
B. F
C. NG
Ching-He's father was good at cooking.
A. T
B. F
C. NG
In 2008, Ching-He starred in her first cooking TV series.
A. T
B. F
C. NG
生产函数表示( )。
A. 一定数量的投入,至少能生产多少产品
B. 生产一定数量的产品,最多要投入多少生产要素
C. 投入与产出的关系
D. 最大利润对应的产量
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