A.724
B.725
C.726
D.727
[单选题]1615cm-1( )。
[单选题]:2210,1913,1616,1319,( )。A.1021B.1022C.1023D.1024
[单选题]1913,1616,1319,1022,( )A.526B.724C.725D.726
[单选题]1913,1616,1319,1022,()A.526B.724C.725D.726
[单选题]1913,1616,1319,1022,( )A.526B.724C.725D.726
[单选题]1913,1616,1319,1022,()A.526B.724C.725D.726
[单选题]1615,2422,3629,5436,( )。A.8150B.8143C.7850D.7843
[单选题]黄体酮红外光谱的主要特征有A.δ(双键)1615cmB.v(双键)1615cmC.v(苯环)3610cmD.u(20位酮基)1700cmE.v(3位酮基)1665cm