[单选] In which scenario do you use the Flashback Database feature？（）

A . when a table is dropped and you restore it from the Recycle Bin
B . when a user’s schema is dropped and you recover the user’s schema
C . when some incorrect data is inserted in the table and you retrieve the table to a state that was at a certain timestamp
D . when a row of a table is updated frequently and committed， and you view all the versions of the row within a specific duratio

病毒的主要结构成分和繁殖过程？在偏摆仪上检查主轴精度应注意顶尖顶住顶尖孔时不可用力过紧，也不可（）。 Which Tivoli application has a predefined X-Agent available？（） IBM Tivoli Storage Manager。 IBM Tivoli Enterprise Console。 IBM Tivoli Configuration Manager。 IBM Tivoli System Automation Manager。 What is the result？（） Compilation fails.。 An exception is thrown at runtime.。 The code executes normally and prints "sleep".。 The code executes normally， but nothing is printed.。鼠笼异步电动机的最大电磁转矩对应的临界转差率Sm与定子电压的大小（）。成正比。成反比。无关。成线性关系。 In which scenario do you use the Flashback Database feature？（）

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[单选] In which scenario do you use the Flashback Database feature？（）

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