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【单选题】
假设需求曲线和供给曲线都是线性的,使用下表数据: 价格 P 需求量 Q D 供给量 Q S 10 20 30 40 1000 800 600 400 100 500 900 1300 写出供给函数为以下哪个?A.
Q S =-300+40P
B.
Q S =300+40P
C.
Q S =300-40P
D.
Q S =1200+40P
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【单选题】T hey teach us English _______we teach them Chinese;we help each other.
A.
but
B.
and
C.
or
D.
as.
【单选题】Kate _______ English and I _______ Chinese. [ ]
A.
teaches us, teach she
B.
teaches we, teach she
C.
teaches us, teach her
D.
teaches our, teach her
【简答题】理想吸附模型的动力学方程 在Ni催化剂上的混合异辛烯加氢生成异辛烷 H 2 +C 8 H 16 C 8 H 18 (A) (B) (R) 假设反应机理是分子态吸附的氢和吸附的异辛烯反应，按均匀表面吸附模型对不同控制步骤导出相应的动力学方程式。
【简答题】Textbooks are used (teach) ______ us how to acquire knowledge.
【单选题】A dog or a cat can teach us a lot about human nature. They are a lot more like us ______some might think.
A.
that
B.
what
C.
than
D.
which
【单选题】The girl ______(not teach) us English on Sundays.
A.
not teach
B.
is not teach
C.
doesn’t teach
D.
don’t teach
【简答题】基于理想吸附模型的动力学方程都属于 型,不论反映类型如何,媳妇形式如何,都可以表示成 。
【单选题】— She is so busy that she can't teach us how to make a home page. — Never mind. Let's do it ___________. [ ]
A.
herself
B.
myself
C.
ourselves
D.
itself
【单选题】Thank you very much for _____ us so well. [ ]
A.
teaching
B.
teach
C.
teaches
D.
to teach
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