Characteristics of Assignment Problems: Sellmore (Section 6.6)(指派问题的特征:塞尔 默公司问题) Variants of Assignment Problems: Job Shop (Section 6.7)(指派问题的变形:娇普肖普公司 问题) Variants of Assignment Problems: Better Products (Section 6.7)(指派问题的变形:求佳 产品公司问题) Variants of Assignment Problems: Revised Middletown (Section 6.7)(指派问题的变形:米 德尔学区的新问题)