A:﹣2﹣9i
B:﹣2+9i
C:2﹣9i
D:2+9i
如图所示的向日葵图案是用等分圆周画出的,则⊙O与半圆P的半径的比为( )
图幅相同的四张地图中,比例尺最小的是( )
—There are some pieces of bread on the plate. You can take ______.