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【多选题】
Examine the following command that is used to duplicate a database on the same host: Which two statements describe the effect after the database is duplicated successfully? （）A.
The data files of the read-only tablespaces in the target database are not duplicated
B.
The read-only tablespaces in the target database are still defined in new the database
C.
The read-only tablespaces in the target database are changed to online after duplication
D.
The data files of the read-only tablespaces in the target database get duplicated
E.
The read-only tablespaces in the target database are not defined in the new database
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反馈参考答案：
举一反三
【单选题】在Excel工作表中单元格A1为空单元格,在单元格A2中输入公式“=10/A1”,确认后单元格A2将显示【】。
A.
#NAME!
B.
#VALUE!
C.
DIV/0!
D.
#NULL!
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