圆柱底面积一定，体积与高请选择ABC)`7S;{9{)J.g)~1t(W8a4M*]8r4y,g:w/q6B,v'W(A7U+m(R.z-B7m3f;v,t
A．成反比例(A7U+m(R.z-B7m3f;v,t
B．不成比例(A7U+m(R.z-B7m3f;v,t
C．成正比例(A7U+m(R.z-B7m3f;v,t