滞销品淘汰的目的之一在于有效利用销售场所空间,提高商品周转率和经营效益。
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将物体放在斜面上,物体的重力可()为物体沿斜面的下滑力和垂直于斜面的正压力。
A. 分解
B. 假定
You are a DBA of your company. You created a database named SALES on an Oracle 10g instance. You have defined an index named INDEX1 on the database table named INVENTORY. Users are complaining that queries accessing the INVENTORY table are running slow. Upon investigation you determine that the tablespace where the index is located is experiencing high I/O and you decide to relocate the index to another tablespace. Which of these will be the best way to accomplish this objective?()
A. Rebuild the index.
B. Coalesce the index.
C. Drop and re-create the index in the new tablespace.
D. Relocate the index using the ALTER INDE..MOVE statement.
尾水事故闸门检修工作前,应关闭进水闸门(或进水阀)和上游检修闸门,并做好防止开启隔离措施,做好其他防止突然来水措施。
A. 正确
B. 错误
表是由()组成的。
A. 记录和窗体
B. 查询和字段
C. 字段和记录
D. 报表和查询