| | | | | 90% | | | | | 1. | 1 | | 2 2.5 kg 1 1.5kg 0.5kg 0.3 0.5 kg | | 2 | 0 5℃ | | 3 | | 2. | | | | 1% | | | | 8 10 cm 3 % | 1 2 | |