填一填。3i/A+p6w+D-K'S-c(z'?6X;w'C
45是5的'J:i(q'a.z)W.q倍,24是9~*M7g6Q0A6c.Z+i的3倍。3i/A+p6w+D-K'S-c(z'?6X;w'C