How can an administrator verify that the disk is still usable when the output of‘lspv’shows‘hdisk1’ is in a missing state？（） lspv -l hdisk1。 lscfg -l hdisk1。 lsattr -l hdisk1。 dd if=/dev/hdisk1 bs=512k count=10 of=/tmp/disk.txt。
基坑工程支护结构监测的内容有（）。 立柱沉降、抬起的监测。 支撑（锚杆）轴力、弯曲应力的监测。 腰梁（围檩）轴力、弯曲应力的监测。 邻近建筑物的沉降和倾斜监测。 围护墙侧压力、弯曲应力和变形的监测。
A customer is running Microsoft Windows 2003, Sun Solaris, and IBM AIX with a total capacity of20 TB. This customer needs high availability for e-business applications. The servers are currently connected to two EMC Symmetrix subsystems that are running RAID 1. The customer wants to consolidate all storage into an IBM System Storage DS8700. How many Fibre Channel drive sets are needed to satisfy the total capacity for this customer?（） 8 drive sets of 300 GB drives。 4 drive sets of 300 GB drives。 14 drive sets of 146 GB drives。 18 drive sets of 146 GB drive。
噪音对人主要有哪些不利影响
When youre performing active database duplication，a backup of what kind is required？（） A current RMAN backup-set backup is required.。 No backup is required.。 An RMAN image backup is required.。 A manual backup is required.。 A "duplicate" preparatory backup is required.。
维护国家市场秩序的立法有（）
