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【简答题】
根据测量原理和信号特点，仪器分析方法可以分为：光学分析法、 分析法、电化学分析法、质谱分析法和其他分析方法。
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举一反三
【单选题】假设各反应中的气体都是理想气体,则 K θ =K p =K x =K n 的反应是 。
A.
CaCO 3 (s)= CaO(s)+CO 2 (g)
B.
N 2 O 4 (g)= 2NO 2 (g)
C.
2ZnS(s)+3O 2 (g)=2ZnO(s)+2SO 2 (g)
D.
CO(g)+H 2 O(g)= CO 2 (g)+H 2 (g)
【简答题】660K时的反应 2 NO + O2 2NO2。NO和O2的初始浓度和及反应的初始速率v的实验数据为:实验编号 1 0.10 0.10 0.0302 0.10 0.20 0.0603 0.20 0.20 0.240试求(1)反应级数和速率方程;(2)速率常数k;(3)当= c(O2) =0.15mol·L-1时的反应速率。(10分)
【单选题】— Peter, would you like a beer to go with your meal? — Sure, it _____. [ ]
A.
ordered
B.
was ordered
C.
has been ordered
D.
has ordered
【单选题】听力原文：W: Were these books ordered by John or Sue? M: Bill ordered them. Who were the books ordered by?
A.
John.
B.
Bill.
C.
The man.
【单选题】-Hi， Tom.Have you ordered yet？ -________. [ ]
A.
No, I don’t like it
B.
Yes, I’m being served
C.
I have no idea
D.
I make myself at home
【简答题】We all long for friendship, but how to make a friend? “The best time to make a friend is before you need one.” Joy Steven said. The following are some tips for you. People equal friends Friends usuall...
【单选题】Do you know how long it is ______we last went to the theatre? [ ]
A.
since
B.
before
C.
when
D.
that
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