MRP有三种输入信息,即主生产计划,库存状态和()信息。2
A. 产品结构
B. 批量
C. 安全库存量
D. 制品定额
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联系自己所学专业,试述医学科研设计的五个原则是什么,各举例说明。
It is true that theseherbs (草药) can be used to _________pain.
A. relief
B. relieve
C. worsen
D. recognize
They are making further efforts to _________the cost of production.
A. increase
B. add
C. gain
D. decrease
My brother told me that he had met with no difficulty _________in learning English grammar.
A. therefore
B. therein
C. whereas
D. whatsoever