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钢筋混凝土偏心受压破坏通常分为哪两种情况?它们的发生条件和破坏特点是怎样的?

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While working on the database, you receive the following error: 01578: ORACLE data block corrupted (file# 6, block # 54) ORA-01110 : data file 6: ’u01/oracle/oradata/data1.dbf’ You decide to recover the corrupted data block by using the Block Media Recovery feature. Which option is NOT a disadvantage of using block media recovery?()

A. Block Media Recovery must be used with RMA
B. You must perform complete recovery of individual blocks.
C. You must have a full RMAN backup, not an incremental backup.
D. You must use the DBVERIFY utility before using the Block Media Recovery feature.

阴道的主要功能有()。

A. 排尿
B. 导入精液
C. 排出月经
D. 分娩通道
E. 月经产生地

电力机车发生火灾时如何处置?

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