题目内容

注释有什么作用?

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事故的基本特征有哪些?

张应力的存在会引起宽展增加。

A. 正确
B. 错误

如果车厢两侧都不靠站台,应选择无车通过的车门装卸,无此条件的,应当派人值守,注意信号及来往火车。

A. 正确
B. 错误

You want to create the Recovery Manager (RMAN) Virtual Private Catalog (VPC) to maintain a separation of responsibilities along with a consolidation of RMAN repository. Which condition must be met before you create the VPC?()

A base catalog exists
B. The recovery catalog is empty
C. The base recovery catalog must be dropped
D. A target database is registered in the recovery catalog

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