题目内容

泵的扬程就是泵的升扬高度。

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稳定流动时,流体的流速、压强、密度等均不随时间和位置而变。

将滤浆冷却可提高过滤速率。

YourdatabaseisopenandrunninginARCHIVELOGmode.YoutakeRMANfullbackupseverySundaynight.OnMondaymorning,whilequeryingtheuser1.employeestable,youreceivethefollowingerrormessage:
01578:ORACLEdatablockcorrupted(file#5,block#51)ORA-01110:datafile5:
’/u01/app/oracle/oradata/orcl/example01.dbf’
Youneedtorectifythecorruptionwhileensuringthefollowing:Thedatafileshouldremainonline.
Themeantimetorecover(MTTR)shouldbeminimal.
Youarenotusingabackupcontrolfile,andallthearchivedlogsareaccessible.
Whichoptionwouldyouchoose?()

板框压滤机的过滤时间等于其它辅助操作时间总和时,其生产能力最大。

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