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【单选题】
某反应 2A +B ® C ,实验测得其速率方程为 n= k C A ×C B ,由此可见该反应为A.
三分子反应也是三级反应
B.
三分子反应，二级反应
C.
二级反应
D.
一级反应
E.
双分子反应，三级反应
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举一反三
【简答题】The purpose of systems ysis phase is to build a logical model of the new system. The first step is（ ）, where you investigate business processes and document what the new system must do to satisfy ...
【单选题】The logical organization of the text is that _____.
A.
an assertion is made, followed by a few examples to illustrate it.
B.
future ers are stated and relative measures are to be adopted.
C.
a historical trend is stated and evidence is then provided to prove it.
D.
examples of risks are given and reasons are then advanced to clarify them.
【简答题】The magazines in the reading room _________ ( take) home.
【单选题】The narrator says the "melting pot" is responsible for the different spices Americans crave. In this video, the phrase "melting pot" means: ___
A.
a large pot for cooking
B.
diversity of people in the culture
【单选题】There was so much noise in the room that the speaker couldn’t make himself ____.
A.
being heard
B.
hearing
C.
heard
D.
hear
【单选题】You are not _______ to take the newspapers and magazines out of the reading room.
A.
hoped
B.
imagined
C.
supposed
D.
wished
【单选题】___in this room that our first meeting was held.
A.
Just when
B.
When
C.
Where
D.
It was
【单选题】—________ are they singing? —They’re singing in the music room.
A.
Who
B.
What
C.
Where
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