题目内容

根据截平面与圆柱轴线的相对位置的不同，截交线有直线、圆、椭圆三种不同的形状。

A. 对
B. 错

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根据截平面与圆锥轴线的相对位置的不同，截交线有圆、椭圆、双曲线、抛物线、直线五种形状。

A. 对
B. 错

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