An administrator has received an update CD with the latest technology level for AIX 5.3. The current operating system level of the server is at base AIX 5.3. What action needs to be taken to apply the new technology level to the server？（） Run smit update_all。 Run smit install_all。 Boot from the installation media。 Run the update_all command from the mounted CD。
注入催化裂化反应器安全阀防焦蒸汽、再生器的稀相注汽、减压炉和焦化加热的炉管注汽、催化裂化提升管预提升蒸汽的目的是（）。 加热用蒸汽。 用于催化裂化反应器进料雾化。 用于吹扫、事故、消防用汽。 降低油汽分压、增加流速、缩短停留时间。
An administrator received a call from a user whose PC crashed while using vi to edit a file. The user wants the edited file back. Where should the administrator look for the file（） /tmp。 /var/preserve。 /var/tmp/$USER。 $HOME/.vi。
新配制的空气管路要进行酸洗磷化处理。
The current time is 12：00 noon. You want to recover the USERS tablespace from a failure that occurred at 11：50 a.m. You discover that the only member of an unarchived redo log group containing information from 11：40 a.m. onwards is corrupt. With reference to this scenario， if you are not using Recovery Manager （RMAN）， which recovery method would you use？（） timebased recovery。 log sequence recovery。 cancelbased recovery。 changebased recovery。
Given:
Which code, inserted at line 14, allows the Sprite class to compile?（）
