单项选择题
（）is software about the relation between the customer the customer and the supplier in marketing
A.Customer Relationship Management (CRM) B.Customer service C.Sales planning D.Distribution channel
单项选择题 （） is guaranteed by the full market supply and Just-In-Time (JIT)
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（）
