A.6.02h B.66.02h C.23h
A.0.7ml B.1.4ml C.1.8ml
A.NA(t)=NB(t), B.AA(t)=AB(t), C.NA(t)、NB(t)不隨時(shí)間變化 D.NA(t)、NB(t)的比例不隨時(shí)間變化