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【判断题】
在酶切反应缓冲液中加入BSA 的目的是保护酶的活性,通过提高溶液中蛋白质的浓度,防止酶的失活。A.
正确
B.
错误
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【简答题】_________(Date Terminal ,DTE)是指用于处理用户数据的设备,是数据通信系统的信源和信宿。
【简答题】Why does the speaker introduce such exact figures in Section G? _______________________________________________________________________________________________________
【单选题】Why does Miranda need to fly back to New York despite the storm?
A.
Because she has a very important meeting the next day.
B.
Because she cannot put up with Miami.
C.
Because she is testing Andrea’s competence.
D.
Because she doesn’t want to miss her daughters’ performance.
【简答题】Why does the author think that students language deficits Should be blamed on schools?
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