个人跨统筹地区就业的，其基本医疗保险关系随本人转移，缴费年限重新计算。
Which are the prerequisites for performing flashback transactions on your database？（） Undo retention guarantee for the database must be configured.。 Supplemental log must be enabled for the primary key.。 Supplemental log must be enabled.。 Execute permission on the DBMS_FLASHBACK package must be granted to the user.。
厂商（）市场中能够以最有效率的方式进行生产并能够使消费者得到最大满足。 完全垄断。 寡头垄断。 完全竞争。 垄断竞争。
Your database has the SRV1 service configured for an application that runs on middle-tier application server. The application has multiple modules. You enable tracing at the service level by executing the following command: SQL > exec DBMS_MONITOR.SERV_MOD_ACT_TRACE_ENABLE (‘SRV1’); The possible outcome and actions to aggregate the trace files are as follows: 1. The command fails because a module name is not specified. 2. A trace file is created for each session that is running the SRV1 service. 3. An aggregated trace file is created for all the sessions that are running the SRV1 service. 4. The trace files may be aggregated by using the trcess utility. 5. The trace files be aggregated by using the tkprof utility. Identify the correct outcome and the step to aggregate by using tkprof utility?（） 1。 2 and 4。 2 and 5。 3 and 4。 3 and 5。
移动通信基站天线应在防雷装置的保护范围内，防雷装置应设置专用雷电流引下线，材料应采用（）的热镀锌扁钢或者不小于35mm2铜导线。 40mmx4mm。 40mmx1mm。 40mmx2mm。 40mmx3mm。
电泵井变压器的检查周期（）
