抒情式开头多采用排比、比喻、比拟等修辞手法，形象生动，引人入胜。
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在规定的时间间隔期的基础上，按事先安排的计划进行的维修活动即为（）
A. 定期维修
B. 故障维修
C. 状态维修
D. 事后维修
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？（）
A. Use a flashback query to retrieve the rows that were deleted
B. Useconventialincremental export and then import the affected object
C. Shutdown the database inNORMALmode and restart the database instance
D. Use DBMS_META package to reconstruct the object using undo segments
E. UseTablespacePoint in Time Recovery （TSPITR） method to recover the table and the data
F. Use Oracle DataPumptwithflashback_timeoption toentableflashback export and then import the affected object.
储粮害虫的人为传播是（）的。
A. 快速的、突发的和环球性
B. 缓慢的、突发的和环球性
C. 快速的、渐变的和环球性
D. 缓慢的、渐变的和局部性
I wonder if Tim could control the situation. （）
A. It‘s none of your business.
B. You‘ll get involved in it.
C. Tim must be thinking about it.
D. Well, if he can‘t control it, no one can.
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