覆盖前庭球及前庭大腺,向后与肛门外括约肌互相交叉而混合的肌肉是
A.RBC4.0×1012/L,Hb75g/L,MCV63fl,MCH22pg,MCHC0.25,网织红细胞0.010 B.RBC2.3×1012/L,Hb85g/L,MCV94fl,MCH35pg,MCHC0.35,网织红细胞0.015 C.RBC2.0×1012/L,Hb60g/L,MCV84fl,MCH30pg,MCHC0.33,网织红细胞0.003 D.RBC4.5×1012/L,Hb115g/L,MCV83fl,MCH31pg,MCHC0.34,网织红细胞0.015 E.RBC2.2×1012/L,Hb63g/L,MCV81fl,MCH32pg,MCHC0.33,网织红细胞0.09 F.Mn2+ G.Cu2+