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通常使用()命令测试网络的连通性。

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Which two statements are true about encrypting RMAN backup?()

A. The transparent encryption of backups uses the encryption wallet
B. The database uses the same encryption key for every encrypted backup
C. The password encryption of backups only uses the password while creating and restoring backup
D. If transparent encryption is configured, you cannot use the SET ENCRYPTION BY PASSWORD command to make password-protected backups.

重点抽项审查法是指什么?它适用于哪些方面?其特点是什么?

由于离心泵有能量损失,所以电机传给泵的功率总大于泵的有效功率。

A. 正确
B. 错误

试述销售经理对销售人员的指导行为包括哪几个方面,其指导内容是什么?

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