Which two database operations can be performed at the MOUNT stage of database startup？（） renaming of data files。 dropping the database user。 renaming of control files。 multiplexing of control files。 configuring the database in ARCHIVELOG mode。
钻削尺寸精度可达到IT11-（）。 IT10。 IT9。 IT8。 IT7。
Which of the following x366 8GB memory configurations will produce the best performance？（） One memory card with four 2GB DIMMs。 Two memory cards with four 2GB DIMMs。 Two memory cards with eight 1GB DIMMs。 Four memory cards with eight 1GB DIMM。
Which statement describes the effect on an index， when the indexed column for the rows is updatedin the base table（） An update in a leaf row takes place.。 The index becomes invalid after the update.。 The leaf block containing the row to be updated is marked as invalid.。 A row in the leaf block of the index for the key value is logically deleted and a new leaf row is inserted。
在商品运输保险中，以下不属于商品运输中综合险的是（） 因受震动、碰撞、挤压而造成的商品破碎或包装开裂。 液体商品因受震动、碰撞或挤压而使所用容器损坏而渗漏的损失。 符合安全规定而遭受雨淋的损失。 因运输工具发生火灾、爆炸、碰撞而造成的损失。
Which file should be edited to manually add a printer？ （）
