下列依据热化学方程式得出的结论正确的是( )A.已知2H2(g)+O2(g)=2H2O(l)△H=-483.6 kJ?mol-1,则氢气的燃烧热为483.6 kJ?mol-1B.已知C(石墨,s)=C(金刚石,s)△H>0,则金刚石比石墨稳定C.已知2C(s)+2O2(g)=2CO2(g)△H1 2C(s)+O2(g)=2CO(g)△H2 则△H1>△H2D.已知Ni(CO)4(s)=Ni(s)+4CO(g)△H=Q kJ?mol-1,则Ni(s)+4CO(g)=Ni(CO)4(s)△H=-Q kJ?mol-1