A.4.99%,755KPa B.29.2%,753KPa C.30.1%,92.6KPa D.4.99%,89.8KPa
A.101.3KPa B.1013KPa C.略高于101.3KPa D.略低于101.3KPa
A.MgSO4 B.Al2(SO4)3 C.CH3COOH D.K2SO4