To perform a database point-in-time recovery using RMAN， after database restoration， you must ensure that the database is in which of the following states？（） ["OPEN","MOUNT","NOMOUNT","CLOSE"]
公路基本建设程序中，具有决定性的造价控制工作环节是（）。 ["项目决策","工程设计","工程施工","工程结算"]
Which three statements about subqueries are true? （） ["Asinglerowsubquerycanretrieveonlyonecolumnandonerow.","Asinglerowsubquerycanretrieveonlyonerowbutmanycolumns.","Amultiplerowsubquerycanretrievemultiplerowsandmultiplecolumns.","Amultiplerowsubquerycanbecomparedusingthe"；>；"；operator.","AsinglerowsubquerycanusetheINoperator.","Amultiplerowsubquerycanusethe"；="；operator."]
水蚯蚓
Which is a valid Cisco CRS 4.0 deployment scenario? （） ["redundant Cisco CRS Engines and a simplex database server ","redundant Cisco CRS Engines with five simplex VoIP monitoring servers ","redundant Cisco CRS Engines and databases running on two different nodes outside of the Cisco CRS cluster ","redundant Cisco CRS Engines and databases with two VoIP monitoring servers and three recording server"]
“不敷衍塞责，不宣传有害学生身心健康的思想”，这属于教师哪个方面的职业道德？
