患者,男,23岁,月前因外伤致上前牙折断,于外院做治疗。口腔检查见左上中切牙牙冠横折,断面位于龈上2mm。根管口暂封。叩(~),松(~),牙龈及咬合正常。X线片显示根尖无暗影,根管治疗完善。理想的冠桩直径为根径的()
A. 1/4
B. 1/3
C. 1/2
D. 2/3
E. 3/4
交流装置中A相黄色,B相绿色,C相为红色。
A. 正确
B. 错误
Which best describes the main purpose of Service Update Management Assistant (SUMA)?()
A. Schedules the install AIX APARs and updates
B. Automatically installs AIX APARs and updates via the HMC
C. Schedules and automates the download of AIX APARS and updates
D. Automatically queries existing machines and alerts when APARS and updates are available
患者,男,23岁,月前因外伤致上前牙折断,于外院做治疗。口腔检查见左上中切牙牙冠横折,断面位于龈上2mm。根管口暂封。叩(~),松(~),牙龈及咬合正常。X线片显示根尖无暗影,根管治疗完善。桩核预备时,唇侧肩台应为烤瓷冠留出的空间是()
A. 0.5mm
B. 1.0mm
C. 1.5mm
D. 2.0mm
E. 2.5mm