Which statement is true about the PCTFREE setting for the table（） ["It sets the minimum percentage of a data block to be reserved to contain chained rows from other blocks.","It sets the minimum percentage of a data block to be reserved as free space before the server prevents inserts into the block.","It sets the minimum percentage of a data block to be reserved to contain the bitmap used to maintain the free block information.","It sets the minimum percentage of a block that can be used for row data plus overhead before new rows are added to the block."]
推进水利工程建设项目信息公开和诚信体系建设的目的要求不包括（） ["解决市场准入和退出机制不健全的问题","解决水利工程建设信息公开不规范的问题","完善水利工程建设制度","解决水利工程建设领域信用缺失的问题"]
水利工程建设监理单位以串通、欺诈等不正当竞争手段承揽监理业务，依法可责令改正，给予警告。
A technical specialist has a requirement to implement a 4-way POWER5 server with a small Web server partition and a high performance database server partition. The Web server provides a client front-end to the database server. The most important concerns are speed of communication between the Web server and the database and I/O speed of the database. Which of the following virtualization features would be most appropriate？（） ["Virtual SCSI","Virtual Ethernet","Virtual I\/O Server","Micro-Partitioning"]
简述幼儿结构游戏的指导要点。
第一个发现微生物的是（）。
