IBM DS5000 systems supports RAID 6. RAID 6 support has two parity bits so that the system cansupport two drive failures. Which of the following items is the IBM designation for this feature onthe DS5000？（） 6 P+Q。 6 D+P。 6 D P。 RAID DP。
某房地产开发公司兴建住宅楼工程。招标文件规定，工程为砖混结构，5层，工期265日，固定总价合同模式。至投标阶段工程施工图设计尚未全部完成。在此过程中发生如下事件：
事件一：施工单位中标价格为1350万元。但是经双方3轮艰苦谈判，最终确定合同价为l200万元，并据此签订了施工承包合同。
事件二：在投标过程中，某施工单位未到现场进行勘察，认为工程结构简单并且对施工现场、周围环境非常熟悉，另外考虑工期不到一年，市场材料价格不会发生太大的变化，于是按照企业以往积累的经验编制标书。
事件三：部分合同条款中规定：l.施工单位按照开发公司批准的施工组织设计组织施工，施工单位不承担因此引起的工期延误和费用增加责任。
2.开发公司向施工单位提供场地的工程地质和主要管线资料，供施工单位参考使用。事件三中合同条款有哪些不妥之处？说明正确做法。
David managed to accidentally delete the datafiles for database called DSL. He called Heber and Heber tried to help but he managed to delete the control files of the database. Heber called Bill and Bill saved the day. They are using a recovery catalog for this database. What steps did Bill perform to recover the database and in what order？（） a. Restored the control file with the RMAN restore controlfile command. b. Mounted the DSL instance with the alter database mount command. c. Restored the datafiles for the DSL database with the RMAN restore command. d. Opened the DSL database with the alter database open resetlogs command. e. Recovered the datafiles for the DSL database with the RMAN recover command. f. Started the DSL instance. g. Connected to the recovery catalog with RMAN. a， b， c， d， e， f， g。 b， c， d， g， f， e， a。 g， f， a， b， c， e， d。 c， a， d， b， f， e， g。 g， f， a， b， e， c， d。
首过效应可减少经体循环到达靶器官组织的外源化学物数量或可能减轻毒性效应。
简述土地经济供给的影响因素。
ou have a large amount of historical data in a flat file. Some analysts in your organization need to query thisdata in the file. The file is too large to load the data in it into your current database.
Which is the most effectivemethod to access this data in your database（）
