A.cB B.ωB C.ρB D.φB
A.36.5% B.26.5% C.2.6% D.3.6%
A.溶液:溶質(zhì)=21:1 B.溶質(zhì):溶液=1:20 C.溶劑:溶質(zhì)=19:1 D.溶液:溶劑=20:21