单项选择题
A.OF->OF>OF+ B.OF>OF->OF+ C.OF+>OF>OF- D.OF->OF+>OF
A.N2+ B.Li2 C.B2 D.C2 E.O2-
A.He2+ B.Be2 C.B2+ D.N2+ E.Li2
A.s B.dxy C.pz D.dxz
微信扫一扫,加关注免费搜题
