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【简答题】
在等电点时,氨基酸溶液pH=pI,氨基酸主要以______的两性离子存在,在电场中不向任何电极移动。当溶液的pH < pI,氨基酸带______,在电场中向____极移动,当溶液的pH > pI,氨基酸带______,在电场中向____极移动
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反馈参考答案：
举一反三
【单选题】We can describe the meaning of a word or sentence by specifying how it is used.
A.
True
B.
False
【简答题】Though she began her ___ by ?Though she began her ___ by singing in a local pop group, she is a famous Hollywood movie star. A) employment B) career C) occupation D) profess...
【多选题】We can describe the English vowel [u:] as__________.
A.
+back
B.
+high
C.
+tense
D.
+unrounded
【单选题】We can describe the west wind in Shelley's poem Ode to the Wset Wind with all the following terms EXCEPT________.
A.
swift
B.
pround
C.
tamed
D.
wild
【单选题】Though she began her（ ）by singing in a local pop group, she is now a famous Hollywood movie star.
A.
employment
B.
career
C.
occupation
D.
profession
【单选题】We can describe the process of designing with empathy as a series of four phases including all of the following, except .
A.
discovery
B.
invention
C.
connection
D.
detachment
【简答题】Though she began her by singing in a ?Though she began her by sin ging in a local pop group, she is now a famous Hollywood movie star. A) profession B) employment C) occupation ...
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