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问题详情

圆锥素线角等于圆锥角的（）。

A、2倍

B、3倍

C、1/2倍

D、1/3

时间：2022-01-04 07:15 关键词：互换性与技术测量测绘科学技术大学试题工学

答案解析

C

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