单项选择题

A.0.1mol/LNaCl和0.1mol/LNaBr
B.0.15mol/LNaCl和0.1mol/LCaCl2
C.0.1mol/LNaCl和0.2mol/L葡萄糖
D.0.5mol/LNaCl和0.5mol/L蔗糖