Which statements are true regarding the system-defined moving window baseline in Oracle Database 11g？（） [" It does not allow you to change the moving window size."," Adaptive threshold functionalities use it by default to compute statistics."," It is created by default with the window size being equal to the AWR retention time."," It is created when the first snapshot is collected by the Automatic Workload Repository （AWR）."]
在商品不合理运输表现形式中，由于运输的商品当地不适销，或商品质量差、杂质多，从而造成运力浪费的不合理运输现象是指（） ["亏吨运输","重复运输","无效运输","迂回运输"]
依法必须进行招标的项目的招标公告，应当通过国家指定的报刊、信息网络或者其他媒介发布。
充装量：气瓶内充装的气体（） ["重量","体积","容积"]
You issue the following statement： SQL> SELECT FIRSTNAME， LASTNAME FROM HR.EMPLOYEE； You receive the following error： 01578： ORACLE data block corrupted （file# 6， block # 54） ORA-01110 ： data file 6： ’u01/oracle/oradata/data1.dbf’ How will you resolve this problem of data block corruption by reducing the mean time to recover （MTTR）？（） [" by using the DBMS_REPAIR package"," by using the DBVERIFY utility"," by using Block Media Recovery"," by issuing the ANALYZE TABLE HR.EMPLOYEES VALIDATE STRUCTURE command"]
园林绿化企业施工项目成本的构成
