Which of the following statements best describes Flashback Versions Query？（） Flashback Versions Query is used to make changes to multiple versions of data that existed between two points in time.。 Flashback Versions Query is used to view all version changes on rows that existed between the time the query was executed and a point in time in the past.。 Flashback Versions Query is used to view version changes and the SQL to undo those changes on rows that existed between two points in time.。 Flashback Versions Query is used to view all version changes on rows that existed between two points in time.。
某男性患者，30岁，胸腹背部大面积烧伤8h。查体：BP68/sommHg，P121/min，cvp2.5mmH20，尿量15ml/h，诊断为烧伤并发休克。应立即为患者采取的治疗措施是（） 扩充血容量。 应用强心药。 纠正酸中毒。 给予糖皮质激素。 使用血管活性药物。
《中华人民共和国反洗钱法》的施行日期是（） 2007-1-1。 2007-3-1。 2007-7-1。 2007-10-1。
Which pseudocolumn could you use to identify a unique row in a Flashback Versions Query？（） XID。 VERSIONS_PK。 VERSIONS_XID。 VERSIONS_UNIQUE。
KZW-4空重车自动调整装置调整阀阀芯弹簧自由高为（）。 33.5～30.5mm。 30～33mm。 28.5～31.5mm。 28.5～255mm。
The customer currently has 20 servers with 1 TB of internal capacity on each server. The serverscommunicate over 10/100/1000 Ethernet. The customer would like to move to a shared storagesubsystem with Fibre Channel hard drives. Budget is a key issue for them. Which option wouldallow for the lowest cost to implement?（）
