（）loaded columns, where the loads are applied at any point on the column section, causing moments about both the x axis and y axis simultaneously
举一反三
- Where does the axis must pass through if the moments of areas of section with respect to an axis is zero。（ ） A: Centroid B: Centroid of mass C: Center D: Any point
- When member is subjected to the eccentric loads, the wrong description of neutral axis is ( ). A: The position of the neutral axis is independent of external forces and eccentricity B: The neutral axis and the point of the external force are on opposite sides of the cross section centroid respectively C: The neutral axis is related to the shape and size of the section D: The closer the external force point is to the centroid, the farther the neutral axis is from the centroid
- For plane bending the characteristics of deformation are ( ). A: The cross section remains plane when bent; B: The axis after deformation is a plane curve; C: All external loads act on the same plane; D: The axis after deformation is in the same plane with the loading plane.
- 中国大学MOOC: If a country produces good Y (measured on the vertical axis) and good X (measured on the horizontal axis), then the absolute value of the slope of its production possibility frontier is equal to _____________.
- The section which is cross to optical axis of anisotropic mineral has no pleochroism and absorption.