32.细胞外液中主要的阳离子是
A.Fe_TagUpStart_2+_TagUpEnd_
B.Mg_TagUpStart_2+_TagUpEnd_
C.K_TagUpStart_+_TagUpEnd_
D.NA_TagUpStart_+_TagUpEnd_
E.CA_TagUpStart_2+_TagUpEnd_
A.Fe_TagUpStart_2+_TagUpEnd_
B.Mg_TagUpStart_2+_TagUpEnd_
C.K_TagUpStart_+_TagUpEnd_
D.NA_TagUpStart_+_TagUpEnd_
E.CA_TagUpStart_2+_TagUpEnd_