核心层包括新闻传播、政府公关；中间层包括公关礼仪、演讲艺术；外围层包括所在部门的相关专业知识以及一定的文化积累。
Core layer includes news media , public relations ; the middle layer consists of public relations etiquette , speech arts ; the outer layer involves relevant professional knowledge and cultural accumulation .
公关演讲