【判断题】直接耦合放大电路前后级放大电路的静态工作点相互独立,互不影响。
【单选题】You perform a backup using the following BACKUP command: RMAN> BACKUP AS COMPRESSED BACKUPSET DATABASE,Which statement is true of this command?()
A.
A different procedure is required to restore a database from compressed backups
B.
The AS COMPRESSED clause of the BACKUP command provided by RMAN is used to create compressed backup sets and image copies.
C.
Using this command to create backups minimizes the bandwidth consumed.
D.
Using this command to create backups improves the performance of the backup process
【单选题】根据五行生克规律,金为水之 __________。
【单选题】在两级共射直接耦合放大电路中前后两极的静态工作点 () 。 A 、 彼此独立,互不影响 B 、 互相影响,互相牵制 C 、 后级对前级有影响,前级对后级无影响
【单选题】Which type of backup contains only the blocks that have changed since the last level 0 incremental backup?()
A.
a cumulative level 1 backup
B.
a differential level 1 backup
【单选题】在传统企业中,物流活动处于分散状态,受各个部门管理,如销售预测、客户服务支持一般由市场部门管理,而物资采购、物流运输等物流活动一般受()管理
【单选题】According to your backup strategy, you performed an incremental level 0 backup of yourdatabase. Which statement regarding this backup is true?()
A.
The backup is similar to image copy.
B.
The backup contains all used data blocks.
C.
The backup contains only unused data blocks.
D.
The backup contains all data blocks changed since the last incremental level 1 backup.
【单选题】哮喘持续状态,失水、痰黏稠难以咳出,最有效的祛痰治疗是
【单选题】Which command is used to configure RMAN to perform a compressed backup for every backup executed?()
A.
BACKUP AS COMPRESSED BACKUPSET DATABASE
B.
BACKUP AS COMPRESSED COPY OF DATABASE
C.
CONFIGURE DEVICE TYPE DISK BACKUP TYPE TO COMPRESSED BACKUPSET
D.
CONFIGURE DEVICE TYPE DISK BACKUP TYPE COMPRESS
E.
BACKUP DATABASE COMPRESS