供应链管理 第三版 Unit 习题与答案【DOC精选】.doc

Chapter 10 Managing Economies of Scale in the Supply Chain: Cycle Inventory True/False Cycle inventory exists because producing or purchasing in large lots allows a stage of the supply chain to exploit economies of scale and increase cost. Answer: False Difficulty: Moderate A lot or batch size is the quantity that a stage of the supply chain either produces or purchases at a given time. Answer: True Difficulty: Moderate Cycle inventory is the physical inventory in the supply chain due to either production or purchases demanded by the customer. Answer: True Difficulty: Moderate The inventory profile is a plot depicting the level of inventory over time. Answer: True Difficulty: Easy When demand is steady, cycle inventory and lot size are related as follows: Cycle Inventory = Lot Size x 2 = Q*2. Answer: False Difficulty: Moderate Lot sizes and cycle inventory do not affect the flow time of material within the supply chain. Answer: False Difficulty: Easy Average flow time resulting from cycle inventory = Cycle Inventory/Demand = Q/2D. Answer: True Difficulty: Moderate Cycle inventory is primarily held to take advantage of economies of scale and reduce profit within the supply chain. Answer: False Difficulty: Easy Increasing the lot size or cycle inventory often decreases the cost incurred by different stages of a supply chain. Answer: True Difficulty: Moderate Cycle inventory exists in a supply chain because different stages exploit economies of scale to lower total cost. Answer: True Difficulty: Easy The costs considered in lot sizing decisions include material cost, fixed ordering cost, and manufacturing cost. Answer: False Difficulty: Moderate The total annual cost is the sum of annual material cost, annual order cost, and annual holding cost, and is given as TC = CD + (D/Q)S + (Q/2)hC. Answer: True Difficulty: Moderate The optimal lot size is referred to as the economic order quantity (EOQ). It is denoted by Q * and is given by the eq