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[单选题]
原问题有5个变量3个约束，其对偶问题( )
A
有3个变量5个约束
B
有5个变量3个约束
C
有5个变量5个约束
D
有3个变量3个约束
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试题答案：
A
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对国民生产总值增长率的预测属于( )
要求不低于目标值，其目标函数是( )
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问题域的内部环境一般是指( )
某地区积累了5 个年度的大米销售量的实际值(见下表)，试用指数平滑法，取平滑系数α= 0.9，预测第6年度的大米销售量(第一个年度的预测值，根据专家估计为4181.9千公斤)
下述预测方法中，属于定性方法的是( )
为了对商品的价格作出较正确的预测，为什么必须做到定量与定性预测的结合?即使在定量预测法诸如加权移动平均数法、指数平滑预测法中，关于权数以及平滑系数的确定，是否也带有定性的成分?
特尔斐法适合中期或长期，专家小组法适合短期。
线性规划的定义
某唱片、磁带工厂根据市场对该厂产品日益增长的需求，拟就三个方案：扩建老厂、建立新厂、将部分生产任务转包给别的工厂。三个方案在产品销路好、销路平常、销路差的情况下、经估算在下一个五年内可获得的益损表如下，试用最小最大遗憾值决策进行决策，选定最优方案。
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With the guide __ the way,we set out onfoot into the dark night.
2.
1.The sun sends out huge amounts of energy, not only to Earth, but to all other planets in the solar system and directly into space. The source of all that energy is nuclear fusion (核聚变) occurring at the sun’s core. The Large Helical Device being developed at the Ministry of Educational Institute for Fusion Science (NIFS) is essentially an “artificial sun” that aims to reproduce this nuclear fusion on Earth.“Nuclear fusion is a reaction in which nuclei of light atoms such as hydrogen combine to form nuclei of heavier atoms such as helium (氦). If we can utilize the huge amounts of energy released by this reaction, nuclear fusion will then constitute a completely new, clean and never ending source of energy,” says NIFS Director Atsui Iiyoshl. In many respects, fusion is far superior to the various conventional energy sources currently in use.Fusion seems to have tremendous potential as a new source of energy. But to produce fusion reactions on Earth, it is necessary to meet a set of critical plasmatic (等离子区) conditions, including ultra-high temperatures of 100 million degrees or so centigrade - a state that refuses to imagine. To meet this challenge, Japanese scientists have come up with their own unique helical device that is particularly safe and is suitable for continuous operation.The large Helical Device now being developed is expected to be completed by the end of next year, with experiments scheduled to start at the beginning of 1998.(5分)1.1The phrase “artificial sun” in the first paragraph probably means “________”.(1分)A. a man-made sun B. NIFSC. the sun’s energyD. fusion science
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关于人格障碍正确的论述有（）
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20.贸易赤字是指一国对外贸易总额中
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(10P216)中共十四大明确提出，我国经济体制改革的目标是建立（ ）
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