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问题 单项选择题 案例分析题

某活动的工期采用三点估算法进行估算，其中最悲观的估算是23天，最乐观的估算是15天，最可能的估算是19天，则该活动历时大致需要（）（1）天，该活动历时估算的方差大概是（）（2）。

空白（2）处应选择（）

A.0.7

B.1.3

C.8

D.4

答案

参考答案：B

名词解释

凹叶厚扑
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单项选择题

Which of the following is least accurate regarding product development and marketing for firms under monopolistic competition（）

A. Firms that bring new and innovative products to the market face relatively more elastic demand curves than their competitors.

B. Relative to other types of competition, product innovation is critical to the pursuit of economic profits.

C. Advertising is necessary to communicate the uniqueness of the firm’s products relative to its competitors.
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