供应链中所有的流程分为两类（）
A.推动式
B.改动式
C.拉动式
D.互感式
E..带动式
参考答案：A, C
用适当的介词填空。
1. Danny isn't ____ school today, and he has been ____ for three weeks.
2. I'm going to play basketball on the playground ____ school.
3. There are plenty flowers in the garden.
4. What shall we write our poster?
5. Let's make a poster ____ drinking.
6. Drinking too much is also bad ____ your health.
7. I have an idea ____ your plan.
在我国的债券回购市场上，回购期限是( )。
A．1个月以内 B．3个月以内 C．6个月以内 D．1年以内
