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我国《专利法》第42条规定:发明专利权的期限为()

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The following parameter are set for your Oracle 12c database instance: OPTIMIZER_CAPTURE_SQL_PLAN_BASELINES=FALSE OPTIMIZER_USE_SQL_PLAN_BASELINES=TRUE You want to manage the SQL plan evolution task manually. Examine the following steps: 1. Set the evolve task parameters. 2. Create the evolve task by using the DBMS_SPM.CREATE_EVOLVE_TASK function. 3. Implement the recommendations in the task by using the DBMS_SPM.IMPLEMENT_EVOLVE_TASK function. 4. Execute the evolve task by using the DBMS_SPM.EXECUTE_EVOLVE_TASK function. 5. Report the task outcome by using the DBMS_SPM.REPORT_EVOLVE_TASK function. Identify the correct sequence of steps:()

A. 2,4,5
B. 2,1,4,3,5
C. 1,2,3,4,5
D. 1,2,4,5

汽车维修质量检验标准规定,对维修质量不合格的车辆提出()意见。

相邻支架间错差≤()侧护板高,支架不挤不咬,支架间空隙<()mm。

一般来说,环境条件越好,森林群落的结构越复杂,其中的植物种类()。

A. 不变
B. 越多
C. 越少
D. 越简单

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