对下列可逆反应恒压加热，平衡移动受其影响最大的是 A: CaCO3(s)=CaO(s)+CO2(g) △rHmØ=177.9 kJ/mol B: N2O4(g)= 2NO2(g)△rHmØ=58 kJ/mol C: 2SO2(g)+O2(g)= 2SO3(g)△rHmØ=-198.2 kJ/mol D: 2HI(g)= H2(g)+I2(s) △rHmØ=-52 kJ/mol