A:H2(g) + O2(g) ='=' H2O(l);△H= —142.9kJ/mol
B:2H2(g) + O2(g) ='=' 2H2O(l);△H= 571.6kJ/mol
C:2H2(g) + O2(g) ='=' 2H2O(l);△H= —571.6kJ/mol
D:2H2 + O2 ='=' 2H2O;△H= —571.6kJ
— ________ you ________ French food yet? — Yes, I have. I love French food best.
有关纬线的叙述,正确的是( )
秦始皇以法家思想治国,其治国指导思想应不包括( )