Square is to pentagon as______. () A: triad is to chord B: quartet is to quintet C: circle is to sphere D: multiply is to divide E: cube is to root

Taking the natural scale of major keys as an example, the triad formed by the three notes 2, 4, and 6 is called A: F B: Fm C: D D: Dm

Roboguide 中，新建图库的工具是菜单 Tools 下的（ ）。 A: Modeler B: Use Current Triad Location C: Actuated CAD D: Cell Browser