题目内容

作业中推动车梯应服从工作台上人员的指挥。

A. 正确
B. 错误

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对年轻一代教育影响,全面地看,是由()、()、()三方面构成的,教育成效往往是这三方面合力的结果。

In Recovery Manager (RMAN), you are taking image copies of the data files of your production database and rolling them forward at regular intervals. You attempt to restart your database. After a regular maintenance task, you realize that one of the data files that belongs to the USERS tablespace is damaged and you need to recover the data file by using the image copy. Because a media failure caused the data file to be damaged, you want to place the d ata file in a different location while restoring the file. Which option must you consider for this task?()

A. using only the RMAN SWITCH command to set the new location for the data file
B. placing the database in the MOUNT state for the restore and recovery operations.
C. using an RMAN RUN block with the SET NEWNAME and then the SWITCH command.
D. configuring two channels: one for the restore operation and the other for the recovery operatio

副热带高压是非常重要的天气系统,它的减弱会诱发ENSO的形成。请简述ENSO是如何形成的,它对全球有哪些方面的影响?

在钢丝绳连接的编绕法中要求,钢丝绳一端绕过心形套环与工作分支用细钢丝扎紧,捆扎长度为L=(22-25)d,同时不应小于()。

A. 200mm
B. 250mm
C. 300mm
D. 350mm

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