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TPU 薄膜(TPU是Thermoplastic Urethane的缩写,中文名称为热塑性聚氨酯弹性体),规格300毫米×100米。用于制作手机按键
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举一反三
【单选题】有一血清蛋白( pI=4.9 )和血红蛋白( pI=6.8 )的混合物,在哪种 pH 条件下,电泳分离效果最好
A.
pH 5.9
B.
pH 3.5
C.
pH 4.9
D.
pH 7.5
【单选题】有一血清蛋白(pI=4.9)和血红蛋白(pI=6.8)的混合物,在哪种pH条件下电泳,分离效果最好:
A.
pH 8.6
B.
pH 6.5
C.
pH 5.9
D.
pH 4.9
E.
pH 3.5
【单选题】有一血清蛋白(pI=4.9)和血红蛋白(pI=6.8)的混合物采用电泳法分离分离效果最好的是
A.
pH8.6
B.
pH6.5
C.
pH5.9
D.
pH4.9
E.
pH3.5
【简答题】Task 2(P16) Read the words and their explanations in the box. Choose a word to complete each of the sentences below and explain its meaning. Change the form if necessary. public (a): all the people in...
【简答题】Listen to a short passage and fill in the blanks with the missing words or phrases. Different people have different _______. For example, some people like reading , _________ and others like _______ ...
【简答题】Please read Active reading (1) in Unit 2 carefully and try to identify the paragraphs from which the five pieces of information below is derived. 1. Variety gives life extra value and allows you to ap...
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【单选题】有一血清蛋白( pI=4.9 )和血红蛋白( pI=6.8 )的混合物,在哪种 pH 条件下,电泳分离效果最好
A.
pH 5.9
B.
pH 3.5
C.
pH 4.9
D.
pH 7.5
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