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【单选题】
维持蛋白质三级结构稳定的最重要的键或作用力是A.
离子键
B.
二硫键
C.
氢键
D.
疏水键
E.
范德华力
拍照语音搜题，微信中搜索"皮皮学"使用
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举一反三
【单选题】What will happen to the workers if the machines are painted gray compared with orange?
A.
Workers may be more cheerful and energetic.
B.
More errors and accidents will occur.
C.
There is no difference at all.
D.
They will be more active and curious.
【单选题】All the machines in the lab are ____ Miss White.
A.
in charge of
B.
in the charge of
C.
under the charge of
D.
under charge of
【简答题】阅读理解。 Two years ago my husband bought me a bicycle. If you live in a city, it is often faster than a car and you don't have to worry about parking (停车). You can leave it anywhere. As it has a seat at ...
【单选题】The book _______ my husband bought in Shenzhen yesterday was very interesting.
A.
who
B.
where
C.
when
D.
which
【简答题】The machines are all made in China.( )
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