中国大学MOOC: On a line chart, the x-axis is also called the dependent axis because its values depend on those of the y-axis.

（）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

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 _____________.

grid函数的参数axis被设置为”x”时，表示网格会平行x轴设置。（ ）

The x-axis (horizontal line) shows different societies.

纵、横坐标轴采用等长刻度的命令是 A: axis square B: axis auto C: axis equal D: axis off

以下属于坐标轴控制的命令的是？ A: axis auto B: axis tight C: axis fill D: axis ij

If you want to get the axis like following figure, how to set the axis?[img=570x508]17de94b382954af.png[/img] A: axis( [ 0 10 15 -10 ] ); B: axis( [ -10 15 0 10 ] ); C: axis( [ 0 10 -10 15 ] ); D: axis( [ 0 -10 10 15 ] );

命令axis([1 10 100 200])将x轴刻度的最大值设定为100

将df的行索引降序+列索引升序排序，正确的方法是（ ）。 A: 先df.sort_index(axis = 0,ascending = False)，然后df.sort_index(axis = 0,ascending = True) 。 B: df.sort_index(axis = 0,ascending = True).sort_index(axis = 1,ascending = False)。 C: df.sort_index(axis = 0,ascending = False).sort_index(axis = 1)。 D: 先df.sort_index(axis = 0,ascending = False)，然后df.sort_index(axis = 0) 。