[单选]

You want to display the titles of books that meet these criteria:
1. Purchased before January 21, 2001
2. Price is less then $500 or greater than $900
You want to sort the results by their data of purchase, starting with the most recently bought book.
Which statement should you use?（）

税收公平包括（）。 绝对公平。 相对公平。 横向公平。 纵向公平。 You want the size of the tablespace to increase when it is full. Which option would you use？（） use automatic extent allocation。 disable threshold for the tablespace。 use freelists to manage the free space。 use automatic segment space management。 create the tablespace as a bigfile tablespace。 use the RESIZE clause while creating the tablespace。 enable AUTOEXTEND for at least one of the data files in the tablespace。 某男性患者，34岁，劳动时不慎刺破左手中指，未引起重视，3d后出现患指肿胀、发红，剧痛，手下垂时疼痛加剧，今天出现发热、全身不适。血常规检查，白细胞计数增高。切开引流的指征是（） 红肿明显。 疼痛减轻。 出现跳痛。 出现波动感。 x线片显示指骨坏死。 横道图形象直观，绘制简单，但横道只表达了分项工程和总体工程起始、终结时间和项目总工期；各时间段工程量（工作量）在横道下列出后，一定程度上反应了进度计划的速率。 机械密封因压盖松动而使密封面移动时可以不更换动、静环。

You want to display the titles of books that meet these criteria:
1. Purchased before January 21, 2001
2. Price is less then $500 or greater than $900
You want to sort the results by their data of purchase, starting with the most recently bought book.
Which statement should you use?（）