典型的 a. t_ _ _ _ _ _

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典型的 a. t_ _ _ _ _ _

相似考题

1.YouareusingOracleDatabase10g.TheLOG_ARCHIVE_FORMATparameterissetto’LOG%t_%s_%r.dbf’.Whyis%rusedinthefilenameformat?()A.touniquelyidentifythearchivedlogfileswiththerestoreoperationB.touniquelyidentifythearchivedlogfileswiththeredologgroupnumberC.touniquelyidentifythearchivedlogfilesforeachincarnationofthedatabaseD.touniquelyidentifythearchivedlogfileswiththenumberofrecoveryoperationsperformed

2.ThedatabaseisrunninginARCHIVELOGmode.Examinetheinitializationparametersandtheirvaluessettoenablearchivingonyourdatabaseserver：LOG_ARCHIVE_FORMAT=arch_%t_%s_%r.arcLOG_ARCHIVE_DEST_1=’LOCATION=/disk1/archive’DB_RECOVERY_FILE_DEST=’/u01/oradata’DB_RECOVERY_FILE_DEST_SIZE=20GWhichstatementistrueregardingthearchivedredologfiles（）A.Itwillbecreatedonthelocalfilesystem.B.ItwillbecreatedonlyintheFlashRecoveryArea.C.ItwillbecreatedinthelocationspecifiedbytheLOG_ARCHIVE_DEST_1parameterandthedefaultlocation$ORACLE_HOME/dbs.D.ItwillbecreatedinthelocationspecifiedbytheLOG_ARCHIVE_DEST_1parameterandlocationspecifiedbytheDB_RECOVERY_FILE_DESTparameter.

3.YouperformedanincompleterecoveryandopenedthedatabasewiththeRESETLOGSoption.TheLOG_ARCHIVE_FORMATparameterissetto’ora_%t_%s_%r.log’.Whichstatementregardingthearchivedredologfiles，createdinanearlierincarnationofthedatabase，istrue？（）A.Thearchivedredologfileswillbeoverwritten.B.Thearchivedredologfilesaredeletedautomatically.C.Thearchivedredologfilesshouldbemovedtosomeotherlocation.D.Thearchivedredologfilesarestillmaintainedbecausethefilenamesareunique.

4.Inyourdatabase，youmaybeforcedtoperformarecoveryusingtheRESETLOGSoptionduringwhichtheredologswouldberesettosequencenumber1.Youwanttoavoidtheoverwritingofoldlogfiles.Whicharchivedlogfilenameformatensuresthis？（）A.%t_%s.dbfB.arch_%t.arcC.arch_%d.arcD.arch_%t_%d.arcE.arch_%d_%s_.dbfF.arch_%t_%s_%r.arc

更多“典型的 a. t_ _ _ _ _ _ ”相关问题

  • 第1题：

    You database is running an ARCHIVELOG mode.The following parameter are set in your database instance:LOG_ARCHIVE_FORMAT = arch+%t_%r.arcLOG_ARCHIVE_DEST_1 = ‘LOCATION = /disk1/archive’DB_RECOVERY_FILE_DEST_SIZE = 50GDB_RECOVERY_FILE = ‘/u01/oradata’Which statement is true about the archived redo log files?（）

    A. They are created only in the location specified by the LOG_ARCHIVE_DEST_1 parameter.

    B. They are created only in the Fast Recovery Area.

    C. They are created in the location specified by the LOG_ARCHIVE_DEST_1 parameter and in the default location $ORACLE_HOME/dbs/arch.

    D. They are created in the location specified by the LOG_ARCHIVE_DEST_1 parameter and the location specified by the DB_RECOVERY_FILE_DEST parameter.


    参考答案：B

  • 第2题：

    请指出下列秩和检验的结果哪个是错误的

    A.配对计量资料n=8，T=12，T_=24，查得T=3～33，P＜0．05
    B.两组计量资料n=12，n=10，T=173，T2=80，查得T0．05=84～146．P＜0．05
    C.配对计量资料n=12，T=7，T_=7l，查得T0=13～65，P＜0．05
    D.两组计量资料n=10，n=10，T=55，T2=155，查得T0．Q5=78-132．P＜0．05
    E.两组计量资料n=9，n=13，T=58，T2=195，查得T=73～134．P＜0．05

    答案：A
    解析：

  • 第3题：

    如果随机过程X（t_=X，其中X是在[-1，1]上均匀分布的随机变量，则X（t)的平均功率为_________________。


    E[Y(t)]=E[3X(t)+4]=3E[X(t)]+4=4R(t,t+τ)=E[Y(t)Y(t+τ)]=E{[3X(t)+4][3X(t+τ)+4]} =9E[X(t)X(t+τ)]+12E[X(t)]+12E[X(t+τ)]+16 =9R(τ)+16由以上两个条件可知，Y(t)是平稳的。

  • 第4题：

    请指出下列秩和检验的结果哪个是错误的

    A．配对计量资料n= 12，T+ =7，T_=71．查得T0.05 =13~ 65，P<0. 05

    B．配对计量资料n=8，T+=12，T_=24，查得T0.05 =3~ 33，P<0. 05

    C．两组计量资料，n1= 12，n2=10，T1= 173，T2=80，查得T0.05=84~146,P<0. 05

    D．两组计量资料n1= 10，n2=10，T1= 55，T2=155，查得T0.05=78~132,P<0. 05

    E．两组计量资料n1=9，n2=13，T1=58，T2 =195，查得T0.05 =73~134，P <0. 05


    正确答案：B

  • 第5题：

    关于先天性肾上腺皮质增生症21羟化酶缺陷，错误的是

    A.典型的发病率高于非典型
    B.典型为重型，非典型为轻型
    C.典型分为失盐型和单纯男性化型
    D.分为典型和非典型
    E.典型的发病率低于非典型

    答案：A
    解析：

  • 第6题：

    在MQH公式中，Q ̇/（C_p ρ_∞ T_∞ A_V √（gh_V ))是放热与吸热比，因此是无量纲的放热项。那么，（h_K A_S)/（C_p ρ_∞ A_V √（gh_V ))代表什么？

    A．无量纲的散热项；

    B．无量纲的产热项；

    C．无量纲的蓄热项；

    D．无量纲的发热项；


    无量纲的散热项；

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