被评估资产的现时重置成本扣减的各项损耗值包括（）。 技术性贬值。 实体性贬值。 功能性贬值。 经济性贬值。
Your company uses a mission-critical database named DB1, which is located on a server named SQL1. You want to mirror DB1 on a second server named SQL2. Before you can establish database mirroring, you need to prepare DB1 and the servers for mirroring. Which three actions should you perform?（） Set the recovery model of DB1 on SQL1 to bulk-logged recovery. 。 Set the recovery model of DB1 on SQL1 to full recovery. 。 Back up DB1 on SQL1. Restore the backup on SQL2; specify the NORECOVERY option. 。 Back up DB1 on SQL1. Restore the backup on SQL2; specify the STANDBY option. 。 Back up DB1 on SQL1. Restore the backup on SQL2; specify the RECOVERY option.。 Create endpoints on all participating servers. 。 Set the AutoShrink property of DB1 on SQL1 to false.。
目前SEG变频器不具备的功能是（） 保护直流母排电容不被击穿。 电网电压跌落时，向电网输出无功。 发电机有过电压存在时通过CROWBAR短接转子回路，保护机侧变频器。 通过测量转速信号，调节功率输出。
在原油管道实施囊式封堵作业时，通过（）可以快速判断管线最初封堵效果。 排部分油后观察油面是否上涨。 看囊压是否下降。 打开挡板排气阀，看挡板压力表是否迅速归零。 仔细观察低压侧压力变化。
You are using Recovery Manager (RMAN) for backup and recovery operations with a recovery catalog. You have been taken database backups every evening. On November 15, 2007, at 11:30 AM, you were informed that the USER_DATA tablespace was accidentally dropped. On investigation, you found that the tablespace existed until 11:00 AM, and important transactions were done after that. So you decided to perform incomplete recovery until 11:00 AM. All the archive logs needed to perform recovery are intact. In NOMOUNT state you restored the control file that has information about the USER_DATA tablespace from the latest backup. Then you mounted the database. Identify the next set of commands that are required to accomplish the task? （） A。 B。 C。 D。
120―1型控制阀滑阀减速充气限制孔为（）。
