题目
题目
单项选择题

The strongest barriers to entry effectively block all Blank ______.

选项
A.economies of scale
B.potential competition
C.marketing efforts
D.monopolistic situations
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标准答案
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思路分析
The prompt asks us to analyze which phrase completes the sentence about barriers to entry in market structure. Option 1: 'economies of scale' - This is a classic barrier to entry because large-scale production lowers average costs, making it harder for small entrants to compete. However, it is not the phrase given in the provided answer field as t......Login to view full explanation

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