批次需求计划与哪些系统有关系？（）
A.存货管理子系统
B.采购管理子系统
C.产品结构管理子系统
D.应收管理子系统
参考答案：A, B, C
—There is a hole in your bag?
—I know. I’m going to have it __________.
A．mend
B．mending
C．mended
D．to be mended
---The famous singer will come to our school for a visit next week.
---Can you be more_____?
---On Sunday morning.
A．specific
B．appropriate
C．due
D．typical
