引发二战后资本主义世界最严重的一次经济危机的直接导火线是（）。 ["资本主义社会基本矛盾激化","国家垄断资本主义的作用减弱","中东国家大幅提高石油价格","美、日、西欧三足鼎立局面的形成"]
To make audit information more productive， the DBA executes the following command before starting an auditoperation： SQL> ALTER SYSTEM SET AUDIT_TRAIL=DB，EXTENDED SCOPE=SPFILE； Which statement is true regarding the audit record generated when auditing starts after restarting Thedatabase（） ["It contains only the plan for the SQL statement executed by the user.","It contains the SQL text executed by the user and the bind variables used with it.","It contains the plan and statistics associated with the SQL statement executed by the user.","It contains the plan for the SQL statement executed by the user and the bind variables used with it"]
《工程建设强制性条文》（电力工程部分）规定，地下开挖工程施工，进行爆破时，人员应撤至飞石、有害气体和冲击波影响范围之外，且无落石威胁的安全地点。单向开挖隧洞，安全地点至爆破工作面的距离，应不少于（）m。 ["50","100","200","500"]
税收法律关系是指通过（）规范确认和调整的，国家、税务机关和税务管理相对人之间在税务活动中发生的具有权利义务内容的社会关系。 ["宪法","刑法","民法","税法"]
You work as a database administrator for Supportcenter.cn. One of the database users accidentally deleted all the rows of a critical table and committed the delete at 1：30 p.m. You senior database administrator， SupportCenter， asks you to retrieve the lost data. Which two actions would you use to ensure that there is no impact on other connected users while retrieving the deleted rows？（） ["Use a flashback query to retrieve the rows that were deleted","Useconventialincremental export and then import the affected object","Shutdown the database inNORMALmode and restart the database instance","Use DBMS_META package to reconstruct the object using undo segments","UseTablespacePoint in Time Recovery （TSPITR） method to recover the table and the data","Use Oracle DataPumptwithflashback_timeoption toentableflashback export and then import the affected object."]
篮球双手胸前传接球是最基本、最常见的传球方法，其动作重点可归纳为（）、（）、（）、（）、（）。双手用力均匀，动作协调连贯。
