关于Oracle Data Pump的导出和导入操作，以下哪两项是正确的？ 您可以从数据泵导出作业中分离出来，然后再重新连接。 您可以从数据泵导入作业中分离出来，然后再重新连接。 Which two statements are true about Oracle Data Pump export and import operations? (Choose two.) （AE） A. You can detach from a data pump export job and reattach later. B. Data pump uses parallel execution server processes to implement parallel import. C. Data pump import requires the import file to be in a directory owned by the oracle owner. D. The master table is the last object to be exported by the data pump. E. You can detach from a data pump import job and reattach later. Both expdp and impdp jobs are detachable and attachable. B选项 is incorrect because parallelism on import process is not related to parallel execution server processes. Task is performed by database writer processes