| | | | | | 3∶2 1∶1.5~1∶2.1 | | | | | | | | | | | | | | | 10~40g | | | | | | | | | | | 30mg 4~8 20 | | | B12 | B12 | | | | 100kg 60g | | | | | | | | | | | | | | | | | | | | | | | | | | | |