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点分线段之比,投影后其比例发生变化。( )
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点分线段之比,投影后其比例发生变化。( )
A、正确
B、错误
时间:2021-09-01 23:18
关键词:
青书学堂
内蒙古农业大学
园林制图(高起专)
答案解析
B
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航摄像片上一线段与地面上相应线段的水平距离之比称为()比例尺
线段上的点将该线段分成的比例,等于点的正投影分线段的正投影所成的比例,这种性质称为正投影的()
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点分线段之比,投影后其比例发生变化。( )
两直线平行,它们的正投影也平行,且空间线段的长度之比等于它们正投影的长度之比,这种性质称为正投影的( )
点分线段的比,投影后保持不变;空间两平行线段长度的比,投影后保持不变。是正投影法的基本性质中的()。
比例尺就是图纸上线段长度与实际相应线段水平长度之比。
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