一个城市的总人口为2500万，其包含5个城区，每个城区的人口大约在500万左右，计划进行一项抽样调查，经计算可知对该城市总人口进行推断的样本量为n。如果还想分别对5个城区的人口进行精确地推断，则样本量应该是（）。 ["n","5n","3n","不能确定"]
Companycom wants to apply a PTF to the p5 590 system. After doing a preview install, the output shows there is insufficient space in the /usr filesystem. The root volume group has no available physical partitions left. They do not want to add additional disk drives to the system, but have a jfs2 filesystem that is only 8% used. What could they do to utilize space in the jfs2 filesystem to apply this PTF?（） ["Backup the filesystem and recreate smaller","Use the chfs to reduce the filesystem size","Use cplv to copy filesystem to smaller size","Use migratepv to copy filesystem to smaller size"]
GK阀主活塞杆弯曲，或主活塞轮和主活塞后端四爪磨耗影响性能时更换。
131.简述更换vensys変桨旋转编码器的过程
A system administrator has a mksysb on tape of an AIX 5.2 machine and needs to install it on a different server. How can this be accomplished？（） ["Install the base AIX from 5.2 media and then install the mksysb overtop.","Mount the tape and use the tar command to install AIX and the rest of the contents of the rootvg.","Insert the mksysb tape and a 5.2 base media CD and then boot to maintenance mode and initiate the install.","Install AIX 5.2 from base media and then perform an update_all install from the mksysb tape of the original machine."]
曲线行进主要包括（）、（）和（）。
