工业动火是指（）产生明火的施工作业。 封堵。 作业时。 直接或间接。 碰头。
以下对市场法的理解正确的有（）。 市场法是资产评估的基本方法之一。 市场法的优点是能够反映资产目前的市场情况。 市场法的优点是评估值较能直观反映市场现实价格。 市场法的缺点是有时缺少可比较的数据。 市场法是最具说服力的评估方法之一。
Examine the following scenario: The target database instance is running. The most recent backup available for the target database was taken two days ago. Log files switches have occurred in last two days. The target database is duplicated on the same host, using the Recovery Manager (RMAN) duplicate command as follows: Which statement is true about the duplicate database in this scenario?（） It contains data till the last backup。 It contains all data from target database until the current time。 It contains all data from only the committed transactions in the target database。 It contains all data except that which is used by the transactions in the current online redo file of target database。
In which scenario will you perform a cancel-based recovery？（） when a tablespace is dropped and you have only RMAN-based backup of the database。 when a table is dropped and stored in the Recycle Bin。 when you are required to recover an existing table to its previous state。 when a tablespace is dropped and you have only a user-managed full backup of the database。
高压锅炉气包一般多用（）。 20g优质碳素钢。 普通低合金钢。 高级合金钢。
法定期间（）路途上的时间。
