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【多选题】
数学建模的一般步骤包括
A.
模型假设
B.
模型构成
C.
模型求解
D.
模型分析
E.
模型检验
F.
模型应用
G.
模型准备
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A.
正确
B.
错误
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【单选题】If this weekend is yawning ahead of you, offering nothing but the same old routines and household duties, then dont despair: boredom is good for you, a new study claims. Far from【C1】______the mind and...
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【单选题】In the HO model, the production possibility frontier is bowed out due to the assumption of
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B.
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C.
increasing returns to scale.
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Two of the above.
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【简答题】Reading comprehension. Just the mention of the TOEFL, GRE and GAMT exams brings a thought of long hours of dull paper work. But that idea is becoming increasingly out of date. As planned, computerized...
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【简答题】When most people are __1__, they know the feeling is only ___2___. But there are large number of people who stay sad for a ___3___ time. These people suffer from the common __4__ sickness known as dep...
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【判断题】为了增强铸铁薄壁工件加工时的刚性，在铸造时可增加加工工艺凸边。(    )
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