问题
多项选择题
孕妇的必要性体重增加包括（）
A.胎儿
B.胎盘
C.羊水
D.增加的血浆容量
E.增大的乳腺和子宫
答案
参考答案：A, B, C, D, E
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孕妇的必要性体重增加包括（）
A.胎儿
B.胎盘
C.羊水
D.增加的血浆容量
E.增大的乳腺和子宫
参考答案：A, B, C, D, E
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