“The music sounds beautiful!” The structure of the sentence is:
A:S+V+O
B:S+V+P
C:S+V+O+OC
边长为22的正△ABC的三个顶点都在体积是43的球面上,则球面上的点到平面ABC的最大距离是____
若方程x+y=3,x-y=1和x-2my=0有公共解,则m的取值为____ .