家鸽身体中最发达的肌肉是( )
A:颈部肌肉
B:胸部肌肉
C:四肢肌肉
D:头部肌肉
It's reported that the passenger ship "Eastern Star" capsized and sank(翻沉) in the Yangtze River _____ June 1st, 2015.
look forward to, accuse sb. of sth., be eager to, inform sb. of sth., concentrate on, so as to, demand to, depend on, assist sb. with sth. ahead of
N2(g)+O2(g)═2NO(g)△H=+180kJ•mol﹣1
则2CO(g)+2NO(g)═N2(g)+2CO2(g)的△H是( )