What were the two camps in World War Ⅰ? A: The central Powers B: The allies C: The axis of evil D: The alliance

“Wing leveler” refers to two-axis autopilot which can provide automatic pitch and roll control.

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 ] );

“Aligned” method in the "Insert constraint" . The axis directions of the two columns are the same, that is, the combination of "shoulder to shoulder" mate constraint and axis coincident constraint. Its icon is: A: [img=73x34]1803a1766d2b1c1.png[/img] B: [img=73x34]1803a17676f8a51.png[/img] C: [img=73x34]1803a17680411b8.png[/img] D: [img=73x34]1803a17688eea25.png[/img]

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) 。

对于三维图层的合成，After Effects提供了哪些坐标系工作方式？（） A: Local Axis Mode B: World Axis Mode C: View Axis Mode D: Parent Axis Mode

The axis of the Forbidden City is ________ the axis of Beijing. A: parallel with B: overlapped with C: perpendicular to

numpy求二维矩阵H每行的和： A: sum(axis=1) B: sum(axis=0) C: sum(axis=-1) D: sum()