| | | | | 1. 2021 10 1 | | 38 | | | 12.6 | 1 5 | 1 6 1 7 1 | 3 | 2. | ( ) 2Kg | 212 2Kg 212 = 424Kg | | 3. | | | | | | | 4. | | | 5. | | | | 6. | | | | | | 7. | | | 8. | | | 9. | | | 10. | | | |