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[单选题]
专家小组法进行预测的时间比较短,因而适用于( )
A
长期或中期预测b.中期或短期预测c.短期预测d.中期预测
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参考答案
试题答案:
C
答案解释:
特尔斐法适合中期或长期,专家小组法适合短期。
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关于线性规划问题,叙述不正确的为( )
使用线性规划单纯形法时,为了将模型转换成标准形式,我们可以在每个不等式中引入一个新的变量,这个新变量称为( )
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第一部分: 阅读判断(第 1~10 题, , 每题 1 分,共 10 分)下面的短文后列出了10个句子, ,请根据短文的内容对每个句子作出判断: :如果该句提供的是正确信息, , 选择A; 如果该句提供的是错误信息, 选择B;如果该句信息文中没有提及, 选择C 。在答题卡相应位置上将答案选项涂黑 。Booking Online and Saving the Environment When you are looking to book aholiday,it is unlikely that you will think about how green your booking decision is,but it is something that you should think about.By green"we mean the impact on the environment. When looking to book a holiday,you will probably find that you are faced with two main decisions.The first is to go into atravel agency,pick up brochures(宣传册),read through them and go back with just one and book with the travel agents directly or over the phone.The second is to go onto the Internet. The Internet holds many advantages over the travel agencies.The main one is convenience.You can go online to lookat holidays at any timeof the day.The travel agents,however,areusually very busy at times when peoplecan actually go,i.e.lunch hours or at the weekend.You could use the telephone,but you wouldn't be able tosee the pictures or the details of the holidays,So you would probably be sent a brochure anyway. There are websites on the Internet that make shopping forholiday deals much easier.These websites are known as price comparison websites.They search through lots of different tour operators,and the results are displayed on one page,from which you can choose. Compared with the travel agencies,bookingonline is greener.The piles of brochures are definitely not green,and the amount of unnecessary paper used can't be good for the environment.In the days ofthe Internet,there is really no need for such a large amountof paper to be wasted.So booking online will not only save you time and effort,it willdo a little bit towards saving the environment,too!
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33.实践是认识的基础,对认识有决定作用,表现在( )
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