识别危险源的存在并确定其特性的过程称之为（）。 危险分析。 危害分析。 危险源分析。 危险源辨识。
From the V$SESSION_LONGOPS view， you find that some of the database users have long-running queries and are consuming a lot of CPU time. This causes problems for you when you try to log on as the system user and perform small maintenance tasks. You would like to ensure that users SYS and SYSTEM get priority over all other users. Which method would you use to achieve this objective？（） create a plan directive in the SYS_GROUP。 create the pending area for the consumer group。 activate the provided SYSTEM_PLAN in Resource Manager。 set the TIMED_STATISTICS parameter to TRUE in the parameter file。 set the execution time limit for all users， except SYS and SYSTEM， in their profile。
圆柱销靠（）配合配合固定在销孔中，经多次拆卸会降低其定位精度和可靠性。 过盈。 过渡。 间隙。 紧固。
Examine the structure of the EMPLOYEES table: EMPLOYEE_ID NUMBER NOT NULL, Primary Key EMP_NAME VARCHAR2(30) JOB_ID NUMBER\ SAL NUMBER MGR_ID NUMBER References EMPLOYEE_ID column DEPARTMENT_ID NUMBER Foreign key to DEPARTMENT_ID column of the DEPARTMENTS table You created a sequence called EMP_ID_SEQ in orderto populate sequential values for the EMPLOYEE_ID column of the EMPLOYEES table. Which two statements regarding the EMP_ID_SEQ sequence are true? （） You cannot use the EMP_ID_SEQ sequence to populate the JOB_ID column.。 The EMP_ID_SEQ sequence is invalidated when you modify the EMPLOYEE_ID column.。 The EMP_ID_SEQ sequence is not affected by modifications to the EMPLOYEES table.。 Any other column of NUMBER data type in your schema can use the EMP_ID_SEQ sequence.。 The EMP_ID_SEQ sequence is dropped automatically when you drop the EMPLOYEES table.。 The EMP_ID_SEQ sequence is dropped automatically when you drop the EMPLOYEE_ID column.。
在制动中立位，104型分配阀均衡活塞下方通客积室，上方通（）。 制动缸。 工作风缸。 副风缸。 滑阀室。
Which two activities are NOT supported by the Data Recovery Advisor DRA（）
