| 1. 6 ~ 8 | | | | | | 1 10 | 1 9 | 2. | 17 ~ 18 | | | 1 1 1 9 | 3. 21 ~ 22 | | | 90% | 10% | | | 1 25 ~ 30 1 10 ~ | 12 | | | | | | 17 | | 17 ~ 18 | | 0.5 16 | | 11 ~ 12 18% | ~ 19% 1.1% 0.45% | 12% ~ 14% 1.0% 0.45% | | | | | | | |