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试题答案:
是对新建或改建项目的主要问题,从技术、经济两个方面进行全面系统的研究分析,并
对其投产后的经济效果进行估测的过程。
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相关题目
某电机厂生产甲、乙两种主要设备,这两种设备均需要逐次经过两条装配线进行装配,有关数据与可获利润列于题39表。为获得利润最大化,该企业每周应如何安排两种设备的生产?试写出该线性规划问题的数学模型,用图解法求出最优解。
符合条件:(1)有一个明确的决策目标;(2)可拟定出两个以上的可行方案,提供给有关部门或人员比较、选择;(3)存在一种以上的自然状态;(4)可以预测或估计出不同的可行方案在不同自然状态下的收益值或损失值的决策类型属于( )
在线性规划中,设约束方程的个数为m,变量个数为n,m ( )
模拟
某厂用A(80),B(60)两种资源生产甲、乙两种产品,设x1,x2分别为甲、乙的计划产量,为使该厂获得最大利润,建立了线性规划
若线性规划无最优解则其可行域无界
科技预测的中期预测时间为( )
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?
某公司对过去一年中某种配件的需求统计如题34表,试计算并在题34表中填写出累计概率分布和随机数分布。
EOQ模型用于解决管理中的( )
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结合例证阐述艺术作品的构成。
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研究发现,增加阿希(S.Asch)式实验情境的模糊性,则从众率就会( )
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4. British Columbia is the third largest Canadian province, both in area and population. It is nearly 1 1/2 times as large as Texas, and extends 800 miles (1,280 km) north from the United States' border. It includes Canada's entire west coast and the islands just off the coast.Most of British Columbia is mountainous, with long, rugged (崎岖的) ranges running north and south. Even the coastal islands are the remains of a mountain range that existed thousands of years ago. During the last Ice Age, this range was scoured (冲刷) by glaciers (冰河) until most of it was beneath the sea. Its peaks now show as islands scattered along the coast.The southwestern coastal region has a humid mild marine climate. Sea winds that blow inland from the west are warmed by a current of warm water that flows through the Pacific Ocean. As a result, winter temperatures average above freezing and summers are mild. These warm western winds also carry moisture from the ocean.Inland from the coast, the winds from the Pacific meet the mountain barriers of the coastal ranges and the Rocky Mountains. As they rise to cross the mountains, the winds are cooled, and their moisture begins to fall as rain. On some of the western slopes almost 200 inches (500 cm) of rain fall each year.More than half of British Columbia is heavily forested. On mountain slopes that receive plentiful rainfall, huge Douglas firs (冷杉) rise in towering columns. These forest giants often grow to be as much as 300 feet (90 m) tall, with diameters up to 10 feet (3 m). More lumber is produced from these trees than from any other kind of trees in North America. Hemlock (铁杉), red cedar (雪松), and balsam fir are among the other trees found in British Columbia.36. With which aspect of British Columbia is the passage primarily concerned?____A. Its people.B. Its culture.C. Its geography.D. Its history.
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73. 下列不属于思想库的是( )(2分)
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下列现象不属于民事法律事实中行为的是()
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