按客户编号、姓名或者职业查询客户的基本信息；可以添加，修改或删除客户信息；按客户信息编号查询名片的基本信息；对名片信息进行添加、删除、修改。-By customer number, customer name or occupation queries basic information You can add, modify, or delete customer information according to customer inquiries card information Nu