智慧职教: 在示教器界面中点击【shift】+【COORD】键切换坐标系。

复位在示教器上应按键（） A: coord B: hold C: reset D: step

ggplot中用于调整坐标的关键字/函数是？ A: guides B: mapping C: scale D: coord

使用示教器时,如果查看位置信息,需要按什么键 A: COORD B: Menu C: Select D: Posn

Going<br/>from a pixel with coorD inate (2,3) to a pixel with coordinate (1,1)<br/>takes() A: One single step both for 4 and 8 adjacency B: Two steps both for 4 and 8 adjacency neighborhoods. C: Two<br/>steps for 8 adjacency anD 3 steps for 4 adjacency. D: One<br/>step for 8 adjacency anD 3 steps for 4 adjacency