An administrator wants to restore the /etc/resolv.conf file from a mksysb backup onto server1. After the mksysb is mounted in /mnt/backup/ from the local nim server. Which command should be run to restore the file?（） ["tar -xvf \/mnt\/backup\/server1.mksysb .\/etc\/resolv.conf","restore -Tvf \/mnt\/backup\/server1.mksysb .\/etc\/resolv.conf","listvgbackup -f \/mnt\/backup\/server1.mksysb -r .\/etc\/resolv.conf","restorevgfiles -xrm \/mnt\/backup\/server1.mksysb .\/etc\/resolv.conf"]
简述在叶轮里进行维护工作时应注意的事项.
N series Filer产品支持下列哪些RAID级别（） ["RAID1","RAID3","RAID5","RAID DP"]
A healthcare customer has an IBM System i server and an HP-UX server. They have high performance I/O， image-based， and archival applications. The customer has asked the IBM team for guidance on IBM DS8000 disk technologies. Which DS8000 disk technology would provide the best performance without regard to cost to meet the customer requirement（） ["73 GB 15k and 300 GB 15k drives","73 GB SSD and 2TB 7.2k drives","146 GB 15k and 300 GB 15k drives","146 GB 15k and 2TB 7.2k drive"]
120型控制阀加速缓解阀由（）、加速缓解膜板、活塞杆、橡胶密封圈、夹心阀、加速缓解阀弹簧、止回阀、止回阀簧、顶杆、加速缓解阀套等组成。 ["主活塞","加速缓解阀活塞","递动杆","稳定杆"]
什么是餐饮成本？其成本由哪些构成？
