A. Flashback Versions Query is used to make changes to multiple versions of data that existed between two points in time.
B. 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.
C. 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.
D. Flashback Versions Query is used to view all version changes on rows that existed between two points in time.
答案：（D）
解析：
A（X），闪回版本查询是查询，而不是改变
B（X），应该是任意两个时间点
C（X），不会查看到撤销这些改变的SQL语句