[名词解释] 电子商务法律关系

价格指数法可用于（）设备重置成本的估测。 ["无参照物的","无现行购置价格的","无财务核算资料的","无账面原值的"] You configured the default backup device type as disk for RMAN backups. In your database，because of business requirements，you have to take a simultaneous duplicate backup of the data files when the RMAN BACKUP command is used.  What must you set using the RMAN CONFIGURE command to achieve this？（）   [" MAXSETSIZE TO 2"," DEVICE TYPE DISK PARALLELISM 2"," RETENTION POLICY TO REDUNDANCY 2"," DATAFILE BACKUP COPIES FOR DEVICE TYPE DISK TO 2"] 关于休克护理，下列哪项不妥（） ["平卧位","吸氧","测血压、脉搏","观察尿量","用热水袋保暖"] 学校教育必须以（）为中心。 ["课外活动","课内外活动","实践活动","教学"] In an Oracle 10g database， the in­memory statistics are gathered at regular intervals and used to perform growth­trend analysis and capacity planning of the database. Which component stores these statistics？（） ["recovery catalog","Oracle Enterprise Manager Repository","Automatic Workload Repository （AWR）","Oracle 10g Enterprise Manager Grid Control","Automatic Database Diagnostic Monitor （ADDM）"] 电子商务法律关系