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【简答题】
气质的应用必须注意哪些问题?
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【单选题】We are sorry to say that your price is too high and what we can afford.
A.
over
B.
pass
C.
beyond
D.
lower than
【单选题】If you want to ask the boss for anything, it is important to find out first out first_________.
A.
to give the boss your advice
B.
how he is feeling.
C.
the boss may have
D.
what you really want to talk to him about
E.
without suggesting a way to solve it
F.
how unhappy you are
【单选题】We are sorry to say it is not possible us to meet the price you requested.
A.
for
B.
of
C.
with
D.
at
【单选题】We are sorry to say it is not possible us to meet the price you requested.
A.
for
B.
of
C.
with
【简答题】(11分)电解原理在化学工业中有广泛应用。右图表示一个电解池，装有电解液a；X、Y是两块电极板，通过导线与直流电源相连。 请回答以下问题： （1）若X、Y都是惰性电极，a是饱和NaCl溶液，实验开始时，同时在两边各滴入几滴酚酞试液，则 ①电解池中X极上的电极反应式为 。 在X极附近观察到的现象是 。 ②Y电极上的电极反应式为 ， 检验该电极反应产物的方法是 。 （2）如要用电解方法精炼粗铜，电解液...
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【单选题】We are sorry to say it is not possible us to meet the price you requested.
A.
for
B.
of
C.
with
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