Why would you use the following FLASHBACK TABLE command？（） FLASHBACK TABLE emp TO TIMESTAMP （’11：45’.’hh12：mi’）； to undo the changes made to the EMP table since the specified time。 to restore the EMP table that was wrongly dropped from the database。 to view the transactions that have modified the EMP table since the specified time。 to view the changes made to the EMP table for one or more rows since the specified time。
教师直接参与到儿童游戏中，与儿童一起游戏，如和儿童一起下棋，一起捉迷藏等，同时进行游戏指导，这种游戏指导方式称为（） 平行游戏指导。 旁观者指导。 共同游戏指导。 非言语指导。
What is the effect of specifying the "ENABLE PLUGGABLE DATABASE" clause in a "CREATEDATABASE” statement?（） It will create a multitenant container database (CDB) with only the root opened.。 It will create a CDB with root opened and seed read only.。 It will create a CDB with root and seed opened and one PDB mounted.。 It will create a CDB that must be plugged into an existing cdb.。 It will create a CDB with root opened and seed mounted.。
View the Exhibit and identify the component marked with a question mark. （） Checkpoint （CKPT）。 Process Monitor （PMON）。 Archiver Processes （ARCn）。 Recoverer Process （RECO）。 Memory Manager process （MMAN）。
药理学的学科任务是：（） 阐明药物作用及其作用机。 为临床合理用药提供理论依据。 研究开发新药。 合成新的化学药物。 创造适用于临床应用的药物剂型。
You need to display a very large single-record data block. Since it will be so large, a convenient means of navigation is needed between items. Which type of canvas would you use to display the data block? （）
