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YouhaveanExchangeServer2010organization.Youneedtoidentifythefollowinginformationforauser’sailbox:ThesizeofitemsintheInboxfolderThenumberofitemsintheDeletedItemsfolderYoumustachievethisgoalbyusingtheminimumamountofadministrativeeffort.Whichcmdletshouldyourun?()
A.Get-Mailbox Folder
B.Get-Mailbox Folder Statistics
C.Get-Mailbox Statistics
D.Get-Store Usage Statistics
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更多 “ YouhaveanExchangeServer2010organization.Youneedtoidentifythefollowinginformationforauser’sailbox:ThesizeofitemsintheInboxfolderThenumberofitemsintheDeletedItemsfolderYoumustachievethisgoalbyusingtheminimumamountofadministrativeeffort.Whichcmdletshouldyourun?()A.Get-Mailbox FolderB.Get-Mailbox Folder StatisticsC.Get-Mailbox StatisticsD.Get-Store Usage Statistics ” 相关考题
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对因果系统,只要判断H(s)的极点,即A(s)=0的根(称为系统特征根)在平面上的位置,即可判定系统是否稳定。下列式中对应的系统可能不稳定的是________。
A.s*s*s+4s*s-3s+2B.s*s*s+4s*s+3sC.s*s*s-4s*s-3s-2D.s*s*s+4s*s+3s+2
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查询选修了课程号为\'C2\'的学生号和姓名,若用下列SQL的SELECT语句表达时,哪一个是错误的?A.SELECT S.S#,SNAME FROM S WHERE S.S#= (SELECT SC.S# FROM SC WHERE C# = 'C2' )B.SELECT S.S#,SNAME FROM S,SCWHERE S.S# = SC.S# AND C# = 'C2'C.SELECT S.S#,SNAME FROM S,SCWHERE S.S# = SC.S# AND C# = 'C2' ORDER BY S.S#D.SELECT S.S#,SNAME FROM S WHERE S.S#IN (SELECT SC.S# FROM SC WHERE C# ='C2' )
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(35)下列等式中,哪一个是不正确的A)SI⌒(S2⌒S3)=(S1⌒S2) ⌒S3B)π A (S1⌒S2) =π A (S1) ⌒π A (S2)C) σ F (S1 ⌒(S2)= σ F (S1) ⌒σ F (S2)D) π A (S1S2) =π A (S1) π A (S2)
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系统开环传递函数为G(s),则单位反馈的闭环传递函数为()
A、G(s)/[1十G(s)]B、G(s)H(s)/[1十G(s)H(s)]C、G(s)/[1十G(s)H(s)]D、H(s)/[1十G(s)H(s)]
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已知下列负反馈系统的开环传递函数,应画零度根轨迹的是 ( )。
A 、*(2)(1)K s s s -+B 、*(1)(5K s s s -+)C 、*2(31)K s s s +-D 、*(1)(2)K s s s --
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非单位负反馈系统,其前向通道传递函数为G(S),反馈通道传递函数为H(S),当输入信号为R(S),则从输入端定义的误差E(S)为 ( )
A 、()()()E S R S G S =⋅;B 、()()()()E S R S G S H S =⋅⋅;C 、()()()()E S R S G S H S =⋅-;D ()()()()E S R S G S H S =-。
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用罐外测量法对铁路罐车进行检定,在罐体规定位置多点测量罐的壁厚后,计算罐平均上板厚度和平均端板厚度的计算公式分别为()。
A.S1=(S11+S12+S13+S14)/4;S2=(S21+S22)/2B.S1=(S11+S12+S13+S14)/2;S2=(S21+S22)/2C.S1=S11+S12+S13+S14;S2=S21+S22D.S1=(S11+S12+S13+S14)/2;S2=(S21+S22)/4
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查询选修了课程号为'C2'的学生号和姓名,若用下列SQL的SELECT语句表达时,错误的是( )。A.SELECT S.S#,SNAME FROM S WHERE S.S# =(SELECT S C.S# FROM SC WHERE C#='C2')B.SELECT S.S#,SNAME FROM S,SC WHERE S.S#==S C.S# AND C#='C2'C.SELECT S.S#,SNAME FROM S,SC WHERE S.S#=S C.S# AND C#='C2' ORDER BY S.S#D.SELECT S.S#,SNAME FROM S WHERE S.S IN (SELECT SC.S## FROM SC WHERE C#='C2')
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main(){ char *s2=“I love China!”,**s1=s2;char *s3,c,*s4=“w”;s3=c;*s3=‘H’;s2=s2+2;printf(“%s\t%c\t%s\t%c\n”,s2,*s3,s4,**s1);}
考题
下列等式中,哪一个是不正确的?()A、S1∩(S2∩S3)≡(S1∩S2)∩S3B、πA(S1∩S2)≡πA(S1)∩πA(S2)C、σF(S1∩S2)≡σF(S1)∩σF(S2)D、πA(S1∪S2)≡πA(S1)∪πA(S2)
考题
下列哪一项是元素原子电离能递增的正确顺序()A、1S2,1S22S22P2,1S22S22P6,1S22S22P63S1B、1S22S22P63S1,1S22S22P6,1S22S22P2,1S2C、1S2,1S22S22P6,1S22S22P2,1S22S22P63S1D、1S22S22P63S1,1S22S22P2,1S22S22P6,1S2
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查询选修了课程号为’C2’的学号和姓名,下列可以实现该效果的SQL语句是()A、select s.s#,sname from s where s.s#=(selectsc.s#fromscwherec#=’c2’B、select s.s#,sname from s,s cwhere s.s#=sc.s#andc#=’c2’C、select s.s#,sname from s joinscon s.s#=sc.s#wherec#=’c2’D、select s.s#,sname from s where s.s#in(selectsc.s#fromscwherec#=’c2’)
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非单位负反馈系统,其前向通道传递函数为G(S),反馈通道传递函数为H(S),当输入信号为R(S),则从输入端定义的误差E(S)为().A、E(S)=R(S)×G(S)B、E(S)=R(S)×G(S)×H(S0C、E(S)=R(S)-G(S)H(S)
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非单位负反馈系统,其输出为C(S),反馈通道传递函数为H(S),当输入信号为R(S),则从输入端定义的误差E(S)为()。A、E(S)=C(S)·H(S)B、E(S)=R(S)·C(S)·H(S)C、E(S)=R(S)·H(S)-C(S)D、E(S)=R(S)-C(S·)H(S)
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AgCl在水中,0.01mol/LCaCl2溶液中,0.01mol/LNaCl溶液,0.05mol/LAgNO3溶液中的溶解度分别为S0、S1、S2、S3,那么下列哪种排列是正确的?()A、S0S1S2S3B、S0S2S1S3C、S0S1S2=S3D、S0S2S3S1
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W11-4DA平台底层甲板的左右舷的斜对角各装有一盏闪光白色信号灯,该信号灯的工作过程为()。A、0.85(S)通—0.25(S)关—0.45(S)通—0.25(S)关—1.5(S)通—11.7(S)关B、0.65(S)通—0.25(S)关—0.65(S)通—0.25(S)关—1.5(S)通—11.7(S)关C、0.65(S)通—0.25(S)关—0.45(S)通—0.45(S)关—1.0(S)通—12.2(S)关D、0.85(S)通—0.25(S)关—0.45(S)通—0.25(S)关—1.0(S)通—12.2(S)关
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单选题45s rRNA经剪接后生成( )。A
5s.5.8s.18s.rRNAB
16s.25s.5s.rRNAC
18s.25s.5s.rRNAD
16s.5.8s.25s.rRNAE
18s.5.8s.28s.rRNA
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单选题某一负反馈控制系统,前向通道的传递函数为G(s),反馈通道为H(s),则系统的开环传递函数为( )。A
φ(s)=G(s)/[1+G(s)H(s)]B
φ(s)=G(s)/[1-G(s)H(s)]C
φ(s)=G(s)H(s)D
φ(s)=-G(s)H(s)
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