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【判断题】
Crime is often related to poverty and unemployment. 正确译文:犯罪常常和贫穷以及失业有关。
A.
正确
B.
错误
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举一反三
【单选题】谷氨酸的Pk1=2.19(a-COOH)、pk2=9.67(a-NH3)、pk3=4.25(g-COOH) ,则谷氨酸的pI=( )。(低阶)
A.
1/2 ( 2.19+9.67 )
B.
1/2 ( 9.67+4.25 )
C.
1/2(2.19+4.25)
D.
1/3(2.17+9.04+9.67)
【单选题】( ) 1 、谷氨酸的 pK1=2.19( a -COOH) 、 pK2=9.67( a -NH 3 ) 、 pK3=4.25( g -COOH) , pI 等于: -
A.
1/2 ( 2.19+9.67 )
B.
1/2 ( 9.67+4.25 )
C.
1/2(2.19+4.25)
D.
1/3(2.17+9.04+9.67)
【单选题】The Ezonexam network administrator has issued the 'VTP password ezonexam' command on a Cisco device. What is the purpose of this command?
A.
It allows two VTP servers to exists in the same domain, each configured with different passwords
B.
It is the password required when promoting a switch from VTP client mode to VTP server mode
C.
It is used to access the VTP server to make changes to the VTP configuration
D.
It is used to validate the sources of VTP advertisements sent between switches
E.
None of the above
【单选题】下列4中静态图像文件在Internet上大量使用的是( )。
A.
SWF
B.
TIF
C.
BMP
D.
JPG
【单选题】( ) 谷氨酸的 pK1=2.19( a -COOH) 、 pK2=9.67( a -NH 3 ) 、 pK3=4.25( g -COOH) , pI 等于:
A.
1/2 ( 2.19+9.67 )
B.
1/2 ( 9.67+4.25 )
C.
1/2(2.19+4.25)
D.
1/3(2.17+9.04+9.67)
【单选题】谷氨酸的Pk1=2.19(-COOH)、pk2=9.67(-NH3)、pk3=4.25(-COOH) pl=
A.
1/2(2.19+9.67)
B.
1/2(9.67+4.25)
C.
1/2(2.19+4.25)
D.
1/3(2.17+9.04+9.67)
【简答题】已知丙氨酸的pK1=2.43(α一COOH)、pK2=9.69(α—NH2);谷氨酸的pK1=2.19(α一COOH)、pK2=9.67(α一NH2)、pKR=4.25(R基团);赖氨酸的pK1=2.18(α—COOH)、pK2=8.95(α一NH2)、pKR=10.53(R基团)。分别计算上述3种氨基酸的等电点。
【单选题】What is the purpose of the command shown below?vtp password Fl0r1da()
A.
It is used to validate the sources of VTP advertisements sent between switches.
B.
It is used to access the VTP server to make changes to the VTP configuration.
C.
It allows two VTP servers to exist in the same domain, each configured with different passwords.
D.
It is the password required when promoting a switch from VTP client mode to VTP server mode.
E.
It is used to prevent a switch newly added to the network from sending incorrect VLAN information to the other switches in the domain.
【判断题】使土石体产生渗透变形的营力是地下水流。
A.
正确
B.
错误
【单选题】谷氨酸的Pk1=2.19(a-COOH)、pk2=9.67(a-NH3)、pk3=4.25(g-COOH) ,则谷氨酸的pI=( )。
A.
1/2 ( 2.19+9.67 )
B.
1/2 ( 9.67+4.25 )
C.
1/2(2.19+4.25)
D.
1/3(2.17+9.04+9.67)
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