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正投影法中，投影面、观察者、物体三者相对位置如何？ What is the correct relative position of the orthographic projection method ？ projection plane, observer and object

A．人——面——物 observer—projection plane —object

B．物——人——面 object—observer—projection plane

C．人——物——面 observer—object—projection plane

D．面——人——物 projection plane —observer——object

参考答案和解析
C
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