将圆柱形肥料池的底面直径扩大2倍，池深不变，肥料池容积请选择ABCD-x2U-E3l*s*k8K1X4V7`3l2j5q9g;v+a7C8f(E-O'p2};}
A．不变1X4V7`3l2j5q9g;v+a7C8f(E-O'p2};}
B．扩大2倍1X4V7`3l2j5q9g;v+a7C8f(E-O'p2};}
C．扩大4倍1X4V7`3l2j5q9g;v+a7C8f(E-O'p2};}
D．扩大8倍1X4V7`3l2j5q9g;v+a7C8f(E-O'p2};}