读下图,有关甲、乙两国的叙述正确的是( )
— Lily is about the competition.
— Yes, she is afraid that she won't win.
已知:在溶液中,FeSO4+NO ⇌ Fe(NO)SO4(棕色),该反应可用于检验NO。下列对该实验相关描述错误的是( )