Which command should an administrator use to view files and volume group backup information from a mksysb called server1.mksysb that is found in /backups?()
A. lsmksysb -l /backups/server1.mksysb
B. showmksysb -f /backups/server1.mksysb
C. listvgbackup -f /backups/server1.mksysb
D. showvgbackup -l /backups/server1.mksy
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下列哪项不是固定义齿的缺点()
A. 合力由桥基牙分担承受
B. 患者不能摘下义齿予以清洁
C. 对桥基牙的牙体组织切割量大
D. 修理不便
E. 适用范围较小
反应加热炉炉管壁温应控制在()
A. ≤535℃
B. 500~550℃
C. <500℃
D. ≤550℃