An administrator needs to apply a Technology Level update. During the preview install, the output indicates that there is insufficient space in the /usr filesystem. Review of the root volume group indicates there are no available physical partitions, but the /test jfs2 filesystem is only 8% used. What is the most efficient method to use the available space in the /test filesystem to apply the update?()
A. Use chfs to reduce the /test filesystem
B. Use cplv to copy the /test filesystem to a smaller logical volume
C. Use migratepv l to move the /test filesystem to a different volume group
D. Backup the /test filesystem, remove it, and recreate it with a smaller size
患者女,4岁,因“气促、发绀4年”来诊。患者活动耐力差,喜蹲踞。查体:口唇和甲床青紫,HR90次/min,律齐,胸骨左缘收缩期杂音,肺动脉瓣听诊区第二心音减弱。有杵状指(趾)。如考虑姑息手术,首选()
A. Fontan手术
B. Waterston分流术
C. Potts分流术
D. 改良Blalock-Taussig分流术
E. 经典Glenn分流术