| 21 | | | | | | | | | | 35% | 40% 45 | 7 | 20% Ⅱ 50% | 1. | 2. | 3. | | 4. | | | 5. | | 6. | 15 | 7. | | 8. | | 9. | | 10. | 11. | | | 3 1. 2. | 3. | | | 40 60 | | | | |