竞争性拮抗剂具有下列特点（） 使激动药量效曲线平行右移。 使激动剂的最大效应降低。 竞争性拮抗作用是可逆的。 拮抗参数pA2越大，拮抗作用越强。 与受体有高度亲和力，无内在活性。
Your database operates in ARCHIVELOG mode. User-managed consistent backups are performed every Sunday night. On Tuesday， client A drops a table at 8：00 a.m. as follows： SQL> DROP TABLE cust_ord PURGE； Table dropped. Client B executes a query at 9：00 a.m. on the same table as follows： SQL> SELECT * FROM cust_ord； SELECT * FROM cust_ord *ERROR at line 1：ORA-00942： table or view does not exist Client B needs the dropped table and reports the problem to you.With reference to this scenario， which action should you take？（） retrieve the table by using the flashback feature。 restore all the data files from last Sunday’s backup and then perform a time-based recovery。 restore all the data files from last Sunday’s backup and then perform a log sequence recovery。 restore all the data files from last Sunday’s backup and then perform a cancel-based recovery。 restore from last Sunday’s backup only data files that belong to the tablespace in which the table was stored and then perform a complete recovery。
可以使用GetChildRows方法检索指定主表记录的所有子表相关记录。
与闻一多《死水》可谓异曲同工的当代诗歌是（）。 《结结巴巴》。 《车过黄河》。 《独白》。 《帕斯捷尔纳克》。
Your boss at Certkiller .com wants you to clarify Oracle 10g. Which condition in your database forces you to perform only consistent backups？（） The database is in mount state.。 One of the tablespaces is offline.。 One of the tablespaces is read only.。 The database operates in ARCHIEVELOG mode.。 The database operates in NOARCHIEVELOG mode.。
最初提出“师夷长技以制夷”主张的人是（）。
