单项选择题
（） is guaranteed by the full market supply and Just-In-Time (JIT)
A.Zero Inventory B.Zero C.Inventory D.Outsourcing inventory
单项选择题 （） is very convenient equipment for loading and unloading goods.
单项选择题 The area for unloading goods in warehouse is（）
单项选择题 （）performs two basic functions-marketing and logistics.
