A:sharpe
B:being sharpened
C:sharpening
D:to sharpe
下列语句,其中正确的有( )①点(3,2)与(2,3)是同一个点②点(0,-2)在x轴上③点(0,0)是坐标原点
如图所示,理想变压器原线圈接在交流电源上,图中各电表均为理想电表,下列说法正确的是( )
— Mom, where is my eraser? Please help me it.
— Oh, it's in the schoolbag.