劳改工作管理局 Bureau of Reform-through-Labor Work 旅游局 Travel Bureau/Tourism Administration 铁路局 Railways Bureau 邮政局 Post Bureau 电信局 Telecommunications Bureau 北京民航管理局 Beijing Bureau of Civil Aviation
may emphasize the former,the old may,however stress the my opinion,both book knowledge and personal experience are of equal gained from experience may be firsthand,direct,and unforg