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【简答题】
已知q为单位过滤面积所得滤液体积V/S,q e 为V e /S,V e 为过滤介质的当量滤液体积(滤液体积为V e 时所形成的滤饼层的阻力等于过滤介质的阻力),在恒压过滤时,测得 Δt/Δq=3740q+200 则过滤常数K=____。
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举一反三
【简答题】通过以上学习板材的资料,请举例说出哪三种板材适宜作底板?
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【单选题】I don't know ______________ next. [ ]
A.
what to do it
B.
how to do it
C.
what I would do it
D.
how I would do it
【单选题】听力原文： 'What do you think is really important in the United States?' I really think that independence is one of the most important American values. From childhood we learn to be independent, to think f...
A.
The speaker's opinion about American society.
B.
The relationship between American parents and their children.
C.
American young people's independence.
D.
American social values.
【单选题】I don't know _______. [ ]
A.
what to do it
B.
how to do it
C.
how to do
D.
to do what
【单选题】— What do you think of your new computer? — _______
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It is really fantastic.
B.
I think so.
C.
How about you?
【单选题】I don't know _____ next. [ ]
A.
what to do
B.
how to do
C.
what can I do
D.
how can I do
【单选题】I don't know _____ it next. [ ]
A.
what to do
B.
how to do
C.
what can I do
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