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【单选题】
已知反应A+2B®2Y的速率方程为:v=k×c(A)×c(B) 则反应是
A.
元反应
B.
三级反应
C.
一级反应
D.
二级反应
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参考答案:
举一反三
【单选题】双子叶植物幼根表皮细胞的主要功能为() 。
A.
吸收
B.
保护
C.
通气
D.
运输
【单选题】There are many ________ .
A.
book           
B.
trees         
C.
water
【单选题】How many hexagrams are there in the Book of Changes?
A.
58
B.
62
C.
64
D.
60
【单选题】The book tells small business owners that
A.
there will be many things that they couldn't manage.
B.
they could get encouragement from the book.
C.
they should achieve their respective goals in various ways.
【多选题】Accordong to the teacher, what are the principles to ensure the effectiveness of your arguments?
A.
To avoid assumptions.
B.
To ensure cohesion.
C.
To ensure coherence.
D.
To ensure objectivity.
【单选题】How many English books are there on the table?there is only —English book on it.
A.
a
B.
An
C.
One
D.
The
【单选题】管状组织的表里纬的投纬比应为:( )
A.
1:1
B.
2:2
C.
2:1
D.
1:2
【简答题】管状组织的表里纬的投纬比应为:(__________________ )。
【单选题】双子叶植物幼根表皮细胞的主要功能为
A.
保护
B.
吸收
C.
通气
D.
运输
【简答题】A.Because there is not a single 'e' in that book. B.Because there are many French words in that book. C.Because the English translation of that book is strange. D.Because the translator doesn't manage...
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