MRP系统
参考答案:
就是针对相关性需求的特点,利用物料需求之间的相关关系,即产品结构中物料的从属与数量关系,来确定它们的需要量与需要时间,及其投产或采购的批量与进度日程计划。
The coat made of this kind cloth _____ well. I think it is worthy _______.
A.washes; buying
B.is washed; buying
C.washes; to be bought
D.is washed; to be bought
简述边撑的形式及不同形式边撑的适用范围。