国民经济可分为第一产业、第二产业、第三产业和第四产业。() 正确。 错误。
()is software about the relation between the customer and the supplier in marketing. 。 CustomerRelationshipManagement(CRM) ;。 。 CustomerService ; ;。 。 Salesplanning ; ;。 。 Distributionchannel。
If the goods is damaged or lost in the process of logistics, the shipper can()to the carrier. claim。 ask for pay。 sue。 fight。
()is not a physical wall, but a lot of virtual data to protect the computer network. Data wall 。 Data Channel 。 Data base 。 firewall。
() is meant to provide facility for customer’s need or inquiry and arrange it. Service 。 business 。 customer service 。 making money。
()is used to protect goods not to be deteriorated like food and medicine.