单项选择题
A.92 kJ/kg压缩空气 B.95.7 kJ/kg压缩空气 C.85.6 kJ/kg压缩空气 D.62.8 kJ/kg压缩空气
A.38.69 kJ/kg,84.4% B.38.69 kJ/kg,89.8% C.25.56 kJ/kg,89.8% D.25.56 kJ/kg,84.4%