Which statement is true about the loss of system-critical data files in ARCHIVELOG mode？（） The data files can be recovered till the last committed transaction.。 The data files can be recovered without shutting down the database.。 The data file is taken offline automatically； the database remains open.。 The data files can be recovered to the time of the most recent backup.。
从自然界中分离筛选菌种方法步骤有（）、（）、（）、（）、（）。
监理企业与监理工程师的聘用合同期满后，监理企业不得无故限制监理工程师自由变更注册监理企业。
管理的性质不包括（） 动态性。 科学性。 理论性。 艺术性。
You query the ORDERS table and discover that order number 1101 is missing. One of your reports， generated at 5：00 A.M. on April 23， 2005 using Oracle Reports， includes this order number in the output. You have inserted 100 new orders into the ORDERS table since generating this report. Which flashback technology would you use to recover order number 1101 into the ORDERS table without losing the 100 orders that you added after the report was generated？（） Flashback Table。 Flashback Query。 Flashback Version Query。 Flashback Transaction Query。
团体心理辅导的局限性会表现在（）
