题目内容

按照给排水设备运行管理的服务标准,为保证供水安全进行的水质化验的次数是()

A. 每月一次
B. 每季一次
C. 每年一次
D. 每半年一次

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影响个体活动效率的主观因素主要是个体的能力与动机,但动机因素比能力因素()

A. 次要
B. 更次要
C. 更重要
D. 更无足轻重

胚是种子最主要的部分,由受精卵发育而成的幼小植物体。一般可分为()四部分。

You execute the following RMAN command in the order shown below: BACKUP VALIDATE DATABASE; BLOCKRECOVER CORRUPTION LIST; What will these commands do?()

A. Create a backup of the database and recover all corrupted blocks found in the backup.
B. Run a backup validation and list all the logically corrupt blocks as well as physically corrupt blocks in the database.
C. Run a backup validation to populate V$COPY_CORRUPTION view, and then list any corrupt blocks recorded in the view.
D. Run a backup validation to populate V$DATABASE_BLOCK_CORRUPTION view, and then repair any corrupt blocks recorded in the view.
E. Run a backup validation, repair any corrupt blocks found during the validation process, and then update V$DATABASE_BLOCK_CORRUPTION view to indicate which corrupt blocks have been repaired.

战国时期是我国历史上的大变革时代,各诸侯国纷纷变法。其变法的直接目的是()

A. 促进生产力发展
B. 实现富国强兵
C. 缓和社会矛盾
D. 增强东周王室实力

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