A、及时销毁
B、妥善保管
C、备份保存
D、直接删除
答案:B
A、及时销毁
B、妥善保管
C、备份保存
D、直接删除
答案:B
A. 5×12小时
B. 7×24小时
C. 5×24小时
D. 7×12小时
A. URG和ACK
B. PSH和RST
C. SYN和RST
D. SYN和FIN
A. SELECT NAME + '''s address is ' + ADDR FROM EMP
B. SELECT NAME || '''s address is '|| ADDR FROM EMP
C. SELECT NAME + '\’s address is '+ ADDR FROM EMP
D. SELECT NAME || '\'s address is '|| ADDR FROM EMP
A. 网络设备互联专用
B. 信息网使用
C. 调度数据网使用
D. 统一预留地址
A. RESTORE DATABASE UNTIL
B. RECOVER DATABASE UNTIL
C. RECOVER DATA UNTIL
D. RESTORE DATA UNTIL
A. SYSDBA
B. SYSTEM
C. SCOTT
D. SYS
A. 力量百分之百
B. 精力百分之百
C. 技术百分之百
D. 设备百分之百