第四章测试1.When the views of a composite solid formed by adding are drawn, the solid can be considered as formed by small features, and then the views of the features are drawn one by one. In the process of drawing views of the features, we should keep in mind that the composite solid is a whole solid.
A:错 B:对
答案:B
2.When the views of a composite solid formed by cutting are drawn, the solid can be considered as a extruding prism and then cut by different planes.
A:错 B:对 3.
Which of the usages of center lines in views are correct?
A:Express invisible outlines B:Express crossed center lines of circular projections C:
Show the projection of symmetric plane of a solid in a certain direction
D:Express axis of solids of revolution. 4.The isometric projection of a frontal circle is an ellipse. The minor axis of the ellipse is in coincidence with , and the major axis of the ellipse is perpendicular to .A:axis Y1,axis X1 B:axis X1,axis X1 C:axis Y1,axis Y1 D:axis Z1,axis Z1 5.
The isometric projection of a profile circle is an ellipse. The minor axis of the ellipse is in coincidence with , and the major axis of the ellipse is perpendicular to .
A:axis X1,axis Z1 B:axis X1,axis X1 C:axis Y1,axis Y1 D:axis Z1,axis Z1
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