A. Organization for Standards Institute B. Organization for Internet Standards C. Open Standards Institute D. Open Systems Interconnectio
A. 锐头基座 B. 轨道 C. 皮腔 D. 胶片基座 E. 座架 F. 三脚架
A. 6m3 B. 9m3 C. 3m3 D. 5m3
A. 8m B. 9m C. 12m D. 16m