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【判断题】
共集电极放大电路的输入信号与输出信号相位上相差180°。A.
正确
B.
错误
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【简答题】What did Jane say to you last night?-She asked me____A. will I go to her party B. if I would go to her party C. that I would go to her party D. how would I go to her party
【单选题】— What did Jane say to you last night? — She asked me .
A.
will I go to her party
B.
if I would go to her party
C.
that I would go to her party
D.
how would I go to her party
【单选题】有一混合蛋白质溶液,各种蛋白质的PI为4.6、5.0、5.3、6.7、7.3,电泳时欲使其中的4种蛋白质泳向正极,缓冲液的PH应该是
A.
4.0
B.
5.0
C.
6.0
D.
8.0
E.
7.0
【单选题】有一混合蛋白质溶液,各种蛋白的PI为4.6、5.0、5.3、6.7、7.3,电泳时欲使其中的4种蛋白质泳向正极,缓冲液的PH值应为
A.
4
B.
5
C.
7
D.
8
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