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【单选题】
下列哪种物质不能作混悬剂的助悬剂作用( )A.
蓍胶
B.
海藻酸钠
C.
硬酯酸钠
D.
羧甲基纤维素钠
E.
硅皂土
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皮皮学刷刷变学霸
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【简答题】【改错题】IV. Correct errors in pronoun case. 下面的句子代词格式错误,请将其修改,并写出正确的句子。 Just between you and I, do you think there printer is working?
【简答题】用所给单词的适当形式填空. 1. Do you think there will be more pollution or__________ (little) pollution in 50 years? 2. I think Brazil_________( win) the World Cup year. 3. Jack__________( write) a letter to his p...
【单选题】-Do you think there will be more people in 100 years? -________ , I hope. [ ]
A.
No, there isn't
B.
No, there aren't
C.
No, there won't
D.
No, they won't
【简答题】已知一个交流电流,当 t =0时的值i 0 =1A,初相位为45°,则这个交流电的有效值 为 A 。
【单选题】Do you think there will be no paper books in the future? --____. Some people like paper books better than e-books.
A.
I agree
B.
I hope so
C.
I don't think so
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