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【单选题】
下列选项中__是动作技能学习的开始阶段A.
认知定向阶段
B.
动作的联结阶段
C.
动作技能的自动化阶段
D.
协调完善阶段
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参考解析：
知识点：
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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
【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...
相关题目：
【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