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【简答题】
假定你已分离到一种蛋白质，好像具有两种酶活性。这使你怀疑纯化时可能同时得到了两种蛋白质。为了验证这点，你将该蛋白质制品在不同pH下进行聚丙烯酰胺凝胶电泳。在每种凝胶中，都得到一条带，但带很宽，有可能包含两种未分离开的蛋白质。在SDS-凝胶中，也发现一条很宽的带，因为有两种酶活性的蛋白质很，有必要更仔细验证一下较宽的带是否存在两组组分。在电泳时你能改变什么条件来提高分辨力?除电泳外还可用其他什么方法检测?
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【简答题】实际体重大于参考体重 10 %~ 20 %为 _ _, 大于参考体重 20 %以上为
【单选题】At that moment, with the crowd watching me, i was not afraid in the ordinary sense, as i ___ if I ___ alone.
A.
Would have been ...had been
B.
Should be ...had been
C.
Could be ...were
D.
Might have been...were
【单选题】At that moment, with the crowd watching me, I was not afraid in the ordinary sense, as if I alone.
A.
would have been...had been
B.
should be...had been
C.
could be...were
D.
might have been...were
【单选题】----- It was at that moment_________ her appointment with the doctor.
A.
when she remembered
B.
that she remembered
C.
did she remember
D.
and she remembered
【单选题】According to the passage, back in the 1950s, how long did it take for the first Records book to be put together?
A.
5 months.
B.
6 months.
C.
12 months.
D.
32 months.
【单选题】At that moment , with the crowd watching me , I was not afraid in the ordinary sense , as I if I alone.
A.
would have been … had been
B.
should be … had been
C.
could be … were
D.
might have been … were
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