员工信息管理,员工 类型经理,兼职技术人员,销售经理,兼职推销员,功能模块1：新增 2：更改 3：删除 4：查找 5：显示 6：全删 0：退出=>-Employee information management, employee type manager, part-time technical staff, sales manager, part-time salesman, functional module 1: Add 2: Change 3: delete 4: Search