You want to enable archiving on your database. Presently， the database is running in NOARCHIVELOG mode.Given below are the steps to accomplish the task in random order： 1. Shut down the instance. 2. Execute the ALTER DATABASE ARCHIVELOG command. 3. Start up the instance and mount the database. 4. Set the DB_RECOVERY_FILE_DEST initialization parameter to $ORACLE_HOME/dest_1. 5. Open the database. Which is the correct sequence of steps for accomplishing the task（） 4， 1， 3， 2， 5。 1， 3， 4， 5， 2。 1， 3， 2， 5； 4 not required。 4， 1， 5， 2； 3 not required。 1， 3， 4， 5； 2 not required。
加强公安队伍建设的基本工作思路是（）。 建设过硬班子。 纯洁公安队伍。 树立良好警风。 提高执法水平。
担任人民警察领导职务的人员应当具有的条件有（）。 法律专业知识。 政法工作经验。 组织管理能力。 指挥能力。
When executing a SQL workload, you choose to generate execution plans only, without collecting execution statistics. Which two statements describe the implications of this? （）(Choose two.) It produces less accurate results of the comparison analysis.。 It automatically calls the SQL Tuning Advisor for recommendations.。 It shortens the time of execution and reduces the impact on system resources.。 Only the changes in the execution plan, and not performance regression, are detected.。
The ping loopback hangs with no output. Which of the following is the most likely cause？（） The loopback interface is down and resolv.conf is configured.。 The loopback is not in /etc/hosts and resolv.conf is configured.。 The loopback interface is down and resolv.conf is not configured.。 The loopback is not in /etc/hosts and resolv.conf is not configured.。
“窗口”民警的一般礼仪包括下列哪些内容？（）
