You want to perform an RMAN backup of database as a copy. Which two factors will you consider whileperforming the backup operation?（） (Choose two). The backup as copy can only be taken to disk。 The backup as copy can only be taken to tape。 Backup can be performed only when the instance is shutdown。 Backup will constitute all used and unused blocks in the database。
桥梁高程测量时，桥头两岸应设置不少于（）水准点，每岸至少设1个稳固基准点。 2个。 3个。 4个。 5个。
工业毒物侵入人体的途径常见的有三种，但不包括（）。 呼吸道；。 皮肤；。 消化道；。 血液。
价格指数法适用于（）设备重置成本的估测。 无帐面原值的。 无现行购置价的。 无财务核算资料的。 无参照物的。 无帐面值的。
In your database, the flash recovery area (FRA) is configured as the default for RMAN backups. You executed the following commands to configure the settings in RMAN: RMAN> CONFIGURE DEVICE TYPE disk PARALLELISM 2 BACKUP TYPE TO BACKUPSET; RMAN> CONFIGURE CHANNEL 1 DEVICE TYPE disk FORMAT '/home/oracle/disk1/%U'; RMAN> CONFIGURE CHANNEL 2 DEVICE TYPE disk FORMAT '/home/oracle/disk2/%U'; You issue the following RMAN command to backup the database: RMAN> RUN 2> { 3> ALLOCATE CHANNEL ch1 DEVICE TYPE disk; 4> BACKUP DATABASE; 5> } Which statement is true about the outcome?（） Only one channel is allocated and the backup is created in the flash recovery area。 Only one channel is allocated and the backup is created in the destination specified for channel 1。 Two channels are allocated and backup sets are created in the destinations specified for channels 1 and 2。 Three channels are allocated and backup sets are created in the destinations specified for channels 1, 2, and FRA。
以下对态度和品德之间的关系描述正确的是（）
