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铅垂线AB的投影ab垂直于()

单选题
2022-02-26 21:00
A、OX
B、OYw
C、OYH
D、OZ
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正确答案
A

试题解析

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翻译:With Average or With Particular Average(WA or WPA)()
直线AB的象限角RAB=南西30°;,则其坐标方位角α(1)、(2)=()。
直线AB的W投影垂直于OZ轴,下列直线中符合该投影特征的为()。
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