During system boot, rootvg fails to vary on, causing an LED code of 0552. What is the most likely cause for rootvg not varying on?（）
A、Missing blv
B、Network problem
C、Wrong boot table
D、Corrupted file system
患者王某，继往有肝硬化病史10余年，近2个月来腹胀明显，心慌、气短，呼吸困难，查体：腹部膨隆，状如蛙腹，B超示大量腹水。对王某的护理不正确的是（）
A、取半卧位休息
B、预防压疮
C、食盐摄入每日不超过2g
D、每日摄水量控制在1500ml左右
E、准确记录24小时出入量
A system is being booted into maintenance mode due to root password recovery. After accessing the root volume group and starting a shell without mounting the file systems， what is the next step？（）
A、Delete root’s password from the /etc/security/passwd file.
B、Use the diag recovery tool option to reset root’s password.
C、Execute the ’passwd’ command and assign a new passwd to root UId
D、Mount the / and /usr filesystems on alternative mount points to edit the password file.
低压断路器的灭弧介质是（）。
A、空气
B、绝缘油
C、变压器油
How can the administrator display the boot paths from which AIX can boot?（）
A、bootinfo -r
B、lspath -boot
C、bosboot -ad hdisk0
D、bootlist -m normal -rv
货物运输业增值税专用发票税控系统中，传输盘的功能有哪些？（）
A、申报数据
B、返写监控数据
C、领购发票
D、校准时钟