1: 1 0.8 0.81 0.805
2 2.0 1.97 1.974
2: 17.7 9.0 9.1
3: 1.47 5.80 4.48
4: 3.2×1.84=5.888≈6
5: 3.9×2.9≈11.3
6: 0.49 11 0.048 0.35 0.08 3
7: 8.5 2.448 17.2 9.6
8: 1.462 2.345 0.312
9: 12.5×44×80=44000千克=44吨
提交 重置