Carleton University Students Association (Canada)大学学生协会(加拿大) Certified Unix Systems Administrator注册Unix系统管理员 Certified Utility Safety Administrator (US National Safety Council)安全管理员(注册效用国家安全委员会) Certified Unix System AdministratorUnix系统管理员注册 Cavitational Ultrasonic Surgical Aspirator (Valleylab, Boulder, Colorado, USA)Aspirator(Valleylab空化超声波手术,科罗拉多博得尔市、美国) Citizenship USA Program入籍美国计划 Central Urban Service Area中心城市服务区 Constitution of the United States of America宪法的美利坚合众国 Cavitron Ultrasonic AspiratorCavitron超声波Aspirator Conference USA (Collegiate Athletic Conference)会议的美国大学生运动员会议 Conservatism, USA美国保守 Corrections USA (prison correctional officer organization)美国监狱犯人军官修正组织 Concordia University Students' Association (Montreal, Canada)峰大学生协会(加拿大的蒙特利尔) Chinese Undergraduate Students Association (University of Chicago)中国大学生协会(芝加哥大学) Chinese Undergraduate Students Association中国大学生协会