订货批量算法是项目管理的一种重要方法，对于某项目可根据不同的管理政策来选择采用不同的算法。确定订货批量的方法主要有两大类： (4) 和 (5) 。
前一类方法保持订货量为常数，如有固定订货批量法和 (6) 等，其后者是通过确定采购或制造某产品的投资最大效益确定订货数量来降低成本的。
后一类方法先做订货计划，然后订货数量被计算确定，如有固定周期批量法和 (7) 等，其后者是一种按需订货法；还有一种 (8) ，它生成的计划订货量随着净需求的改变而改变，而订货间隔是用公式计算出来的，不是任意设定的。
A．静态法
B．动态法
C．最优法
D．试探法
参考答案：B
| 完形填空。 | ||||
| He met her at a party. She was outstanding; many guys were 1 her, but nobody paid any attention to him. After the party, he 2 her for coffee. She was 3 . In order not to appear rude, she went 4 . As they sat in a nice 5 shop, he was too nervous to say anything and she felt 6 . Suddenly, he asked the waiter, "Could you please give me some 7 ? I'd like to put it in my coffee." They stared at him. He turned red; but when the salt came, he put it in his coffee and drank. 8 , she asked. "Why salt with coffee?" He explained, "When I was a little boy, I lived near the sea, I liked playing on the sea… I could 9 its salty taste, like salty coffee. Now every time I drink it, I 10 my childhood and my hometown. I miss 11 and my parents, who are still there." She was 12 touched. A man who can admit that he's homesick must love his home and care about his family. He must be 13 . So they dated, 14 and lived happily together. And every time she made coffee for him, she would put in some salt, the way he liked it. After 40 years, he 15 and left her a letter which said: My dear, please 16 my life-long lie. Remember the first time we dated? I was so nervous that I asked for salt 17 sugar. Sweetheart, I don't exactly like salty coffee. But as it mattered so 18 to you, I've 19 to enjoy it. Having you with me was my greatest happiness. If I could live a second time, I hope we can be together again, 20 it means that I have to drink salty coffee for the rest of my life. | ||||
|