Which of the following commands will only provide a snapshot of average memory usage for a process？（）
A、 vmtune
B、 ps au
C、 iostat
D、 rmss -m
An administrator is ordering a new Power 550. They will mirror rootvg and are concerned about single points of failure. Which of the following features should be ordered？（）
A、Dual I/O planar， dual disk drives， dual SCSI adapters
B、Dual disk drive enclosures， dual disk drives， extra media bay
C、Dual disk drive enclosures， dual disk drives and dual SCSI adapters
D、Dual I/O planar， extra media bay， dual disk drives
误服有机磷农药中毒者，出现症状的时间一般是接触后（）
A、3～5分钟
B、10分钟～2小时
C、2～6小时
D、6～12小时
E、12小时以上
Which command will purge the errorlog of all recorded occurrences of a given SRN?（）
A、errclear 0
B、errpt -r -j
C、errclear -j
D、errclear -k
A user can send e-mail， but cannot receive any e-mail. Which of the following settings should be verified in the e-mail account？（）
A、MAC address
B、TCP/IP address
C、POP Server settings
D、SMTP Server settings
慢性细菌性痢疾是指病程超过（）
A、1周
B、2周
C、3周
D、1个月
E、2个月