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问题 单项选择题

左右路幅为一条平面设计线，而纵断面线采用不同的设计高程的路基形式是下列哪种形式？（）

A.横断面分离式路基

B.纵断面分离式路基

C.平面分离式路基

D.平纵均分离

答案

参考答案：B

填空题

消防安全检查的目的在于（）和（）火险隐患以及消防管理中的问题，把火灾事故消灭在（），做到（）。
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单项选择题

Under perfect competition, the short-run market supply curve is most accurately described by which of the following statements The market short-run supply curve is the:（）

A. average of the quantities at each price along the marginal cost curve for all firms in a given industry.

B. sum of the quantities at each price along the average total cost curve for all firms in a given industry.

C. sum of the quantities at each price along the marginal cost curves for all firms in a given industry.
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