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【单选题】
工业上电渗析的主要应用领域是( )A.
海水、苦水淡化
B.
血液透析
C.
共沸精馏
D.
氢气回收
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举一反三
【简答题】A．They might pay less tax. B．They might pay more tax. C．They might have fewer children. D．They might pay some amount of tax.
【简答题】A．It might increase airport capacity. B．It might lower property values. C．It might lead to effective modification of existing jet engines. D．It might cause more transportation costs to and from airpor...
【单选题】If you try to understand _____ that prevents so many Americans from being as happy as one might expect, it seems that there are two causes. [ ]
A.
what it does
B.
why it is
C.
why it does
D.
what it is
【单选题】According to the text, if a person never forgot,______.
A.
he would survive best
B.
he would have a lot of trouble
C.
his ability to learn would be enhanced
D.
the evolution of memory would stop
【简答题】展示设计的发展共分为四个阶段分别是( )、( )、( )、( )。
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