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【单选题】
当发生极化作用时,两电极的电极电势变化为A.
(平,阳) > (阳) ; (平,阴) > (阴)
B.
(平,阳) < (阳) ; (平,阴) (阴)
C.
(平,阳) > (阳) ; (平,阴) (阴)
D.
(平,阳) (阳) ; (平,阴)> (阴)
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举一反三
【单选题】— Did you take your raincoats and umbrellas? — _____. [ ]
A.
Yes, I am
B.
Yes, I do
C.
Yes, I did
【简答题】β-折叠片结构的维持主要依靠两条肽键之间的肽键形成________来维持。（低阶）
【简答题】β-折叠片结构的维持主要依靠两条肽键之间的肽键形成______来维持。
【单选题】Man: Did you take your children out last weekend? Woman: Yes. And they had the time of their lives at the amusement park. Question: What can we learn about the children in the amusement park?
A.
The children enjoyed themselves very much.
B.
They had a good time for the first time in their lives.
C.
They were met with 3 dangerous situation.
D.
They were amused with some breathtaking games.
【单选题】Did you take your ______? —Yes, I have a little fever.
A.
medicine
B.
photo
C.
temperature
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