| | | 50 / | | | | | 1. | 20℃ 2. | | 3. 4 | 4. | 5 | ~ 6 | | | | | 1. | | 2% 1.5% 10 ~ 15 2 ~ 4 | | 2. | 1% ~ 2% | 2% 1 ~ 2 | | 3. 0. | 3% 10% | 2% 3 ~ 4 | | 50 | |