提高空气质量c
Your database is functioning in ARCHIVELOG mode. In which two situations would you perform a cancel-based recovery？ （） You find that one of the redo log members in each redo log group is lost.。 You find that a data file that belongs to the USERS tablespace is damaged.。 You find that a data file that belongs to the SYSTEM tablespace is damaged.。 You find that the current redo log group is damaged and is not available for recovery.。 You realized while performing a recovery that an archived redo log file needed for recovery is lost.。
教师处理幼儿不适当行为时，需要遵循（） 坚持教育的一致性和一贯性原则。 正面教育原则。 及时性和适度性原则。 宽严相济原则。
工应当参加工伤保险，由用人单位缴纳工伤保险费，职工不缴纳工伤保险费。
Examine the following command that is used to duplicate a database on the same host： RMAN> RUN { ALLOCATE AUXILIARY CHANNEL， aux 1 DEVICE TYPE DISK； DUPLICATE TARGET DATABASE TO auxdb SKIP READONLY； \ } Which two statements describe the effect after the database is duplicated successfully？（） The data files of the read-only tablespaces in the target database are not duplicated。 The read-only tablespaces in the target database are still defined in new the database。 The read-only tablespaces in the target database are changed to online after duplication。 The data files of the read-only tablespaces in the target database get duplicated。 The read-only tablespaces in the target database are not defined in the new database。
组织流水施工时，划分施工段的主要目的是（）
