Double Action Only (handguns)双重作用(枪) Disk At Once磁盘 Database Access Object数据库访问对象 Defense Attache Office国防封装的办公室 Dessin AssistÉ par Ordinateur (French: computer assisted design)Dessin AssistÉ par Ordinateur (French: computer assisted design) Data Assimilation Office资料同化的办公室 Development & Ability Organization (Afghanistan)开发能力的组织(阿富汗) Dial Address Outgoing拨打地址外向 Data Access Objects (Microsoft)数据访问对象(微软) Defense AttachÉ OfficeDefense AttachÉ Office Division Ammunition Officer分区弹药军官 Document Advisor Office文件顾问办公室 Department of Army Organization军队组织的 Department/Agency/Organization部门/机构/团体 Dayton Area Office (Los Alamos National Laboratory)代顿市的地区办公室(美国洛斯阿拉莫斯国家实验室)