单项选择题
A.25ml/min B.50ml/min C.55ml/min D.75ml/min E.155ml/min
A.IgG B.IgA C.IgM D.IgE E.IgD
A.100~300mg/L B.200~400mg/L C.300~500mg/L D.400~600mg/L E.500~700mg/L