监理人在核查过程中发现问题，对于发包人提供的设计文件及图纸，通过监理人返回设计单位处理。
You are employed as a DBA in an organization. You are informed that the record of EMP_NO 1000 is missing from the SCOTT.EMP table. You are required to identify the user who deleted the record， the SQL statement that will undo the deletion， and the transaction ID of the transaction that deleted the employee record. Which feature will you use to perform the tasks？（） Only the Flashback Table。 Both the Flashback Transaction Query and the Flashback Version Query。 Only the Flashback Drop。 Only the Flashback Versio。
基站固定式油机试机运行时间不得低于（） 5分钟。 15分钟。 10分钟。 20分钟。
螺母一般与（）配合，用于紧固两个零件。 A、螺丝 。 B、螺栓、螺柱 。 C、螺钉 。 D、螺柱。
当验明设备确无电压后（）将检修设备接地并三相短路。 过一段时间。 应立即。 可不。
What must be created before populating the Tools application？ （）
