下列哪些活动需要服务台负责（） ["事件记录、错误控制、状态记录","受理事件、事件记录。提供管理信息","管理事件、记录配置项信息、提供管理信息","确定影响度、问题管理、配置审核"]
You are peer reviewing a fellow DBAs backup plan for his NOARCHIVELOG mode database， as shown here： Put the tablespaces in backup mode. Back up the datafiles for all tablespaces. Take the tablespaces out of backup mode. Back up all archived redo logs. Your colleague asks for you to comment on his plan. Which response would be correct？（） [" The plan will work as is."," The plan needs to be modified to allow for an archive-log switch after step 3."," The plan needs to be modified so that a backup of the archived redo logs occurs before step 1."," The plan needs to be adjusted to shut down the database after step 1 and to restart the database after step 2."," The plan cannot work as presented."]
金属氧化物避雷器百分之七十五“1mA电压”下的泄漏电流应不大于（）uA。 ["25","50","100"]
装置检修要坚持“三交工”，即“（），（），（）。” 答文:
Which three pieces of information are considered while deciding the size of the undo tablespace in your database？（） ["the size of an undo block","the size of the redo log files","undo blocks generated per second","the size of the database buffer cache","the value of the UNDO_RETENTION parameter"]
牧食食物链
