两个视图为矩形线框 一面试图是组合线框的形体是什么图形？ What is the shape of the object two
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两个视图为矩形线框，一面试图是组合线框的形体是什么图形？ What is the shape of the object two views that are both rectangles and one view is a composite frame ？
A．直棱柱upright polyhedral prism
B．圆柱 cylinder
C．组合柱composite prism
D．圆台frustum of a cone
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组合柱 composite prism