Final answer:
The key feature of a JIT system that is not depicted in the options is A: Purchases of materials in relatively large amounts (i.e., lot sizes) as JIT systems require smaller, more frequent orders to minimize inventory and waste.
Step-by-step explanation:
The answer to the question of which following item is not a key feature of a Just-In-Time (JIT) system is A: Purchases of materials in relatively large amounts (i.e., lot sizes). JIT systems emphasize minimizing inventory and reducing waste by purchasing materials only as they are needed in the production process. This contrasts with traditional inventory practices, where materials are purchased in large quantities to benefit from economies of scale, despite the additional costs of storage and the risk of overstocking.
B: A smooth, uniform production rate, C: Total quality control, D: Multiskilled workers and flexible production facilities, and E: A pull approach to coordinating steps in the production process are all essential characteristics of JIT systems, contributing to efficiency and reducing unnecessary costs.