Question:Which two of the following statements are not true in the context of a Just in Time (JIT) inventory system?
A. It can result in much reduced inventory holding costs.
B. It works best if supplies are obtained from a number of different suppliers.
C. It is dependent upon a close and mutually beneficial working relationship with suppliers.
D. It inevitably increases the need for safety inventories.
E. It requires suppliers to operate sound quality control procedures.
The correct answer is:It inevitably increases the need for safety inventories and; It works best if supplies are obtained from a number of different suppliers.
解析:The aim of JIT is to increase efficiency of inventory control systems in order to reduce company costs, principally by minimising inventory levels and thus stockholding costs.
This is achieved by using local, reliable suppliers who can deliver goods of the right quality in the right quantity at the right time. The burden of quality control is generally passed back to the supplier to cut costs of the company.
JIT works best when a tied supplier relationship is formed, where the orders form a large part, if not the entirety, of the supplier's business. This precludes the use of many different suppliers.
In a JIT system, steps will also be taken to improve customer relations and communications, so that demand can be more accurately determined. This means that re-order levels, and thus safety inventories, can be minimised without necessarily increasing the risks (and thus costs) of stock outs.
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