Association of Veterinary Anaesthetists兽医Anaesthetists协会 Aviation Vehicles Association航空车辆协会 American Vocational Association (now Association for Career and Technical Education)美国职业协会(现在的职业与技术教育协会) Association of Avian Veterinarians兽医协会的禽流感 Air Vehicle Avionics空中汽车电子 American Virtual Airlines美国的虚拟的航空公司 American Viticultural Area (designated wine growing region)美国的栽培区(酒) Audio/Visual Alarm自动可视警报 Agri-food and Veterinary Authority (Singapore)农产品和兽医权威(新加坡) Australian Veterinary Association澳大利亚的兽医协会 Aortic Valve Area主动脉瓣区 Accredited Valuation Analyst认证评估人员 American Vecturist Association美国Vecturist协会 Audio Visual Authoring视听创作系统 Audio Visual Aid视听援助