In 1803 the United States purchased Louisiana from _____.
In 1803 the United States purchased Louisiana from _____.
In 1803, President Jefferson negotiated the purchase of Louisiana from Mexico.
In 1803, President Jefferson negotiated the purchase of Louisiana from Mexico.
下列设置打开文件对话框OpenFileDialog1的Filter属性正确的是_________。 A: OpenFileDialog1.Filter=Pictures(*.Bmp)|*.Bmp B: OpenFileDialog1.Filter=["Pictures(*.Bmp)"|"*.Bmp"] C: OpenFileDialog1.Filter="Pictures(*.Bmp)|*.Bmp" D: OpenFileDialog1.Filter={Pictures(*.Bmp)|*.Bmp} E: OpenFileDialog1.Filter=(Pictures(*.Bmp)|*.Bmp)
下列设置打开文件对话框OpenFileDialog1的Filter属性正确的是_________。 A: OpenFileDialog1.Filter=Pictures(*.Bmp)|*.Bmp B: OpenFileDialog1.Filter=["Pictures(*.Bmp)"|"*.Bmp"] C: OpenFileDialog1.Filter="Pictures(*.Bmp)|*.Bmp" D: OpenFileDialog1.Filter={Pictures(*.Bmp)|*.Bmp} E: OpenFileDialog1.Filter=(Pictures(*.Bmp)|*.Bmp)
[img=91x21]17de8822e93cbeb.png[/img]是吸热反应,正反应的活化能为Ea(1),逆反应的活化能为Ea(2),那么( )。 A: Ea(1)<;Ea(2) B: Ea(1)>;Ea(2) C: Ea(1)=Ea(2) D: Ea(1)=2Ea
[img=91x21]17de8822e93cbeb.png[/img]是吸热反应,正反应的活化能为Ea(1),逆反应的活化能为Ea(2),那么( )。 A: Ea(1)<;Ea(2) B: Ea(1)>;Ea(2) C: Ea(1)=Ea(2) D: Ea(1)=2Ea
若正反应的活化能为Ea,逆反应的活化能为Ea´,则正反应的热效应∆rHm为 A: ∆rHm=Ea´—Ea B: ∆rHm=|Ea´-Ea| C: ∆rHm=|Ea-Ea´| D: ∆rHm=-(Ea´-Ea)
若正反应的活化能为Ea,逆反应的活化能为Ea´,则正反应的热效应∆rHm为 A: ∆rHm=Ea´—Ea B: ∆rHm=|Ea´-Ea| C: ∆rHm=|Ea-Ea´| D: ∆rHm=-(Ea´-Ea)
若正反应的活化能为Ea,逆反应的活化能为Ea’,则正反应的热效应 DrHm为 A: DrHm=Ea’-Ea B: DrHm=│Ea’-Ea│ C: DrHm=│Ea-Ea’│ D: DrHm=-(Ea’-Ea)
若正反应的活化能为Ea,逆反应的活化能为Ea’,则正反应的热效应 DrHm为 A: DrHm=Ea’-Ea B: DrHm=│Ea’-Ea│ C: DrHm=│Ea-Ea’│ D: DrHm=-(Ea’-Ea)
已知复合反应的速率常数和各基元反应的速率常数满足下列关系:k=(k1*k2)/(2k3),则Ea和各基元反应活化能的关系为() A: Ea=Ea,1*Ea,2/2Ea,3 B: Ea=Ea,1+Ea,2-2Ea.3 C: Ea=Ea,1+Ea,2-Ea.3 D: Ea=Ea,1*Ea,2/Ea,3
已知复合反应的速率常数和各基元反应的速率常数满足下列关系:k=(k1*k2)/(2k3),则Ea和各基元反应活化能的关系为() A: Ea=Ea,1*Ea,2/2Ea,3 B: Ea=Ea,1+Ea,2-2Ea.3 C: Ea=Ea,1+Ea,2-Ea.3 D: Ea=Ea,1*Ea,2/Ea,3
http://assets.uooconline.com/upload/2017/06/04/72f34aee363c1cce.pnghttp://assets.uooconline.com/upload/2017/06/04/e61684f2b6d4cdaa.png
http://assets.uooconline.com/upload/2017/06/04/72f34aee363c1cce.pnghttp://assets.uooconline.com/upload/2017/06/04/e61684f2b6d4cdaa.png
CRH2A统型动车组接地继电器位置位于车1位配电盘() A: 02、04 B: 02、06 C: 04、06 D: 02、04、06
CRH2A统型动车组接地继电器位置位于车1位配电盘() A: 02、04 B: 02、06 C: 04、06 D: 02、04、06
在Excel工作表中,( )形式不符合日期格式。 A: “10/15/04” B: 15—OCT—04 C: 2004/10/15 D: 10—15—04
在Excel工作表中,( )形式不符合日期格式。 A: “10/15/04” B: 15—OCT—04 C: 2004/10/15 D: 10—15—04