题目内容

艺术内容与组成的关系。

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Your database is running in ARCHIVELOG mode. You are performing a user-managed backup of the DATA1 tablespace. You place the DATA1 tablespace in backup mode by issuing the following statement： ALTER TABLESPACE data1 BEGIN BACKUP； While you are performing the backup， an error occurs that causes the instance to terminate abnormally. Which statement about the DATA1 tablespace is true？（）

A. The DATA1 tablespace is automatically taken out of backup mode when the instance aborts.
B. If you restart the database，the DATA1 tablespace will be automatically taken out of backup mode when the database is opened.
C. If you restart the database，the DATA1 tablespace will be automatically taken out of backup mode when the database is mounted.
D. If you restart the database，the database will not be opened.

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艺术内容与组成的关系。

艺术家应当具有的素质修养和能力。

变压器储油柜的容积应如何考虑？

开关泄压小阀门时，操作人员应站在什么位置？