| | | | 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 | |