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【单选题】
在硫酸-磷酸介质中,用K 2 Cr 2 O 7 标准溶液滴定Fe 2+ 试样时,其化学计量点电位为0.86V,选择的指示剂为( )。A.
次甲基蓝( =0.36V)
B.
二苯胺磺酸钠( =0.84V)
C.
邻二氮菲亚铁 ( =1.06V)
D.
二苯胺( =0.76V)
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举一反三
【单选题】-What can I do for you?
A.
You are so good
B.
Not at all.
C.
I 'd like to have some drinks.
D.
It is enough.
【单选题】渐开线直齿圆柱齿轮中,齿距 p ,法向齿距 p n ,基节 p b 三者之间的关系为 。
A.
p b = p n ＜ p
B.
p b ＜ p n ＜ p
C.
p b ＞ p n ＞ p
D.
p b ＞ p n = p
【单选题】听力原文：M: I don't have to go to work today. So I can do whatever I like. W: What do you mean? What's happened? Which of the following best describes the woman's reaction?
A.
Curious.
B.
Dubious.
C.
Suspicious.
D.
Credulous.
【单选题】—Hello, what can you do?—I can play ____ piano, so I want to join the Art Club.
A.
a
B.
an
C.
the
D.
/
【简答题】【算法】 程序流程图中的带有箭头的线段表示的是:
【单选题】---What can I do for you？---Well，I’m afraid the box is heavy for you，but thank you all the same．
A.
so
B.
much
C.
very
D.
too
【单选题】I see that you have some problems working together. So what can we do to make sure that you reach an agreement?
A.
fractionation
B.
framing
C.
reframing
D.
highlighting common ground
E.
brainstorming
【简答题】简述传统戏剧型情节的特点和基本结构
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