[多选] Which three are the valid statements in relation to SQL plan baselines？（）

A . The plans can be manually loaded to the SQL plan baseline.
B . The plans in the SQL plan baseline are verified and accepted plans.
C . The plans generated for every SQL statement are stored in the SQL plan baseline by default.
D . The plan baselines are stored temporarily in the memory as long as the database instance is running.
E . For the SQL plan baselines to be accessible to the optimizer， the SYSAUX tablespace must be online.

当井的遥控紧急关断阀（ESD）打开一个时会产生什么样的结果：（）只关闭全部的井口安全阀（SSV）。关闭部分井口的井口安全阀（SSV）和井底安全阀（SSV）。只关闭部分井底安全阀。反思与发展中对教师的基本要求是什么？ Which three statements are true about persistent configuration?（） (Choose three.) A user cannot set privileges on the persistent lightweight jobs。 Persistent lightweight jobs generate a large amount of metadata。 It is possible to create fully self-contained persistent lightweight jobs。 The use of a template is mandatory to create persistent lightweight jobs。 Persistent lightweight jobs are useful when users need to create a large number of jobs in a short time。 Which dynamic view displays the status of block-change tracking?（） V$BLOCK_CHANGE 。 V$BLOCK_CHANGE_TRACKING 。 V$BLOCKCHANGE 。 V$BLOCK_TRACKING。某男，45岁，开车上班突遇车祸，心跳停止。现场有目击者对此患者进行心肺复苏，人工呼吸与心脏按压的比例应为（） 2：5—2：7。 2：15。 l：5。 2：30。 30：2。 Which three are the valid statements in relation to SQL plan baselines？（）

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[多选] Which three are the valid statements in relation to SQL plan baselines？（）

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