A:H2SO4的摩尔质量是98 g
B:1 mol H2O 的质量是18 g/mol
C:Cl-的摩尔质量是35.5 g/mol
D:1 mol N2的体积是22.4 L
——Where is your father?——He_________ Australia and he ________ Sydney for two weeks.
东北三省沦陷后。在日本扶植下成立伪满洲国,其“执政”是( )