平面的正面投影积聚为一条直线并与OX轴平行，该平面是（ ）。

发布时间：2022-04-30 10:36:00 作者：wudongabc..1 阅读量：110

平面的正面投影积聚为一条直线并与OX轴平行，该平面是（ ）。

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