(? ? ?)needs to be given at birth to prevent hemorrhagic disease(出血性疾病)?of some newborns. A.vitamin A B.vitamin K C.vitamin D D.vitamin C
正确答案:B
公务员|事业单位|职业资格等考试题库!
(? ? ?)needs to be given at birth to prevent hemorrhagic disease(出血性疾病)?of some newborns. A.vitamin A B.vitamin K C.vitamin D D.vitamin C
正确答案:B