MRP的输出报告中主要是预测未来需求。指明呆滞物料和严重偏差物料的报告是( )。
A．主报告
B．辅助报告
C．相关报告
D．说明报告
参考答案：B
He has worked in the city _______ three years ago while his wife has been here______only one month.
A．since , for
B．since, since
C．for, since
D．for, since
在一道除法算式中，除数是8，余数是6，商是23，被除数是______．
