Which of the following figures has only one axis of symmetry? A. Square B. Rectangle C. Circle D. Isosceles triangle 相关知识点: 试题来源: 解析 D。解析:正方形有 4 条对称轴,长方形有 2 条对称轴,圆有无数条对称轴,等腰三角形只有 1 条对称轴。
Covalent organic frameworks (COFs) are network polymers with long-range positional order whose properties can be tuned using the isoreticular chemistry approach. Making COFs from strong bonds is challenging because irreversible rapid formation of the net
On the equilibrium of a fluid mass revolving freely within a hollow spheroid about an axis which is not its axis of symmetryXXXXXXXXX
aThe lens perimeter may also be cut to a shape which lacks axial symmetry and may even be irregular. Such shapes are employed in conventional contact lenses of relatively large diameter to cause automatic angular orientation of the lens relative to the optical axis of the eye. Asymmetry obtained...
aA symmetry finder has been developed which uses the intensity-based method to search an image for compact regions which display some degree of mirror symmetry due to intensity similarities across a straight axis. 使用基于强度的方法搜寻图象紧凑地区显示某一程度镜面对称由于强度相似性横跨一个平直的轴...
The correspondence of the form and arrangement of elements or parts on opposite sides of a dividing line or plane or about a center or an axis:the symmetry of a butterfly's wings. A relationship in which there is correspondence or similarity between entities or parts:the symmetry of the pla...
We also use optional cookies for advertising, personalisation of content, usage analysis, and social media. By accepting optional cookies, you consent to the processing of your personal data - including transfers to third parties. Some third parties are outside of the European Economic Area, with...
What is spherical symmetry? What is a radiation curve? explain with a graph. Can a uniform graph have a curve? Or does it always have to be straight? Give an example of: 1. a polynomial of degree 3 whose graph cuts the horizontal axis three times to the right of the origin. 2. A...
Stand comprises holding elements (2) each sliding axially on a guide rail (3) which are fixed centrally around an axis of symmetry and at uniform distances from each other. The holding elements lie in the lowermost position of the adjusting region of the guiding rails in the resting position...
Which of the following statements are correct for unsymmetric bending? A、It doesn’t require such a symmetry plane for the loads B、The resultant moment is no longer parallel to the neutral axis C、The lateral deflection is perpendicular to the neutral axis D、The resultant moment is perpendicu...