(单选题)
腹围(AC)测量的公式是(D1:胎腹前后径;D2:胎腹横径)( )
AAC=D1+D2
BAC=2π/(D1+D2)
CAC=(D1+D2)/2π
DAC=π(D1+D2)/2
EAC=(D1+D2)/2
正确答案
答案解析
略
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