足月自然分娩,男婴重4000g,胎盘娩出后出血约400ml,最可能的出血原因是()。
A.镇静剂
B.产妇衰竭
C.羊水过多
D.巨大儿
E.子宫肌瘤
参考答案:D
33 _______ most young students of his time, he has developed an interest in art
A.Dislike
B.In common
C.Unlike
D.As
同一轨道上两个起重机间应限位开关和安全尺、防止两大车相撞。