• 2021-04-14 问题

    田中30553093306e30443048306f306a3089306b3042308a307e3059。30443048306e30823093306e30883053306b306f大304d306a木304c3042308a307e3059。306b308f306b3082一本大304d306a木304c3042308a307e3059。305d306e木306e下306b30443051304c3042308a307e3059。30443051306e中306b3055304b306a304c3044307e3059。3042304b30443055304b306a3084304f308d30443055304b306a30673059。30443051306e305d3070306b306f3044308d3044308d306a花304c3042308a307e3059。305f304430783093304d308c304430673059。306b308f306b306f3068304d3069304d3068308a304c来307e3059。3053306e30443048306b306f田中305530933068304a304f305530933068男306e子304c一人3068女306e子304c一人3044307e3059。3053306e30443048306b306f30783084304c八30643042308a307e3059。30523093304b3093306e3068306a308a306b304a3046305b3064307e304c3042308a307e3059。305d306e右304c308f306b30613083306e307e304c3042308a307e3059。3060304430693053308d306f30613083306e307e306e30803053304630673059。30613083306e307e306b今田中305530933068女306e子304c3044307e3059。30823061308d309330c830a430ec3068304a3075308d30823042308a307e3059。田中30553093306e30783084306f二304b3044306b3042308a307e3059。田中30553093306e30783084306b306f305f304f30553093本304c3042308a307e3059。305d30573066305f304f305530933048304c3042308a307e3059。田中30553093304c書3044305f304830673059。田中30553093306f毎日3053306e30783084306730793093304d308730463057307e3059。30443051306b306f306a306b304b3044307e3059304b。()

    田中30553093306e30443048306f306a3089306b3042308a307e3059。30443048306e30823093306e30883053306b306f大304d306a木304c3042308a307e3059。306b308f306b3082一本大304d306a木304c3042308a307e3059。305d306e木306e下306b30443051304c3042308a307e3059。30443051306e中306b3055304b306a304c3044307e3059。3042304b30443055304b306a3084304f308d30443055304b306a30673059。30443051306e305d3070306b306f3044308d3044308d306a花304c3042308a307e3059。305f304430783093304d308c304430673059。306b308f306b306f3068304d3069304d3068308a304c来307e3059。3053306e30443048306b306f田中305530933068304a304f305530933068男306e子304c一人3068女306e子304c一人3044307e3059。3053306e30443048306b306f30783084304c八30643042308a307e3059。30523093304b3093306e3068306a308a306b304a3046305b3064307e304c3042308a307e3059。305d306e右304c308f306b30613083306e307e304c3042308a307e3059。3060304430693053308d306f30613083306e307e306e30803053304630673059。30613083306e307e306b今田中305530933068女306e子304c3044307e3059。30823061308d309330c830a430ec3068304a3075308d30823042308a307e3059。田中30553093306e30783084306f二304b3044306b3042308a307e3059。田中30553093306e30783084306b306f305f304f30553093本304c3042308a307e3059。305d30573066305f304f305530933048304c3042308a307e3059。田中30553093304c書3044305f304830673059。田中30553093306f毎日3053306e30783084306730793093304d308730463057307e3059。30443051306b306f306a306b304b3044307e3059304b。()

  • 2021-04-14 问题

    比较C≡C, C=C, C─C, C=C─C=C的键长次序为: C=C─C=C>C─C> C≡C >C=C|C=C─C=C>C─C>C=C>C≡C|C≡C>C=C>C─C>C=C─C=C|C─C>C=C>C=C─C=C>C≡C|C─C>C=C─C=C>C=C>C≡C

    比较C≡C, C=C, C─C, C=C─C=C的键长次序为: C=C─C=C>C─C> C≡C >C=C|C=C─C=C>C─C>C=C>C≡C|C≡C>C=C>C─C>C=C─C=C|C─C>C=C>C=C─C=C>C≡C|C─C>C=C─C=C>C=C>C≡C

  • 2022-07-26 问题

    下列哪种主链骨架原子排列最能代表两个肽键?() A: Cα—N—Cα—C—Cα—N—Cα—C B: Cα—N—C—C—N—Cα C: C—N—Cα—Cα—C—N D: Cα—C—N—Cα—C—N E: Cα—Cα—C—N—Cα—Cα—C

    下列哪种主链骨架原子排列最能代表两个肽键?() A: Cα—N—Cα—C—Cα—N—Cα—C B: Cα—N—C—C—N—Cα C: C—N—Cα—Cα—C—N D: Cα—C—N—Cα—C—N E: Cα—Cα—C—N—Cα—Cα—C

  • 2022-06-01 问题

    比较C≡C(Ⅰ),C=C(Ⅱ),C─C(Ⅲ),C=C─C=C(Ⅳ)的键长次序为( )。 A: Ⅰ>Ⅱ>Ⅲ>Ⅳ B: Ⅲ>Ⅱ>Ⅳ>Ⅰ C: Ⅲ>Ⅳ>Ⅱ>Ⅰ D: Ⅳ>Ⅲ>Ⅱ>Ⅰ

    比较C≡C(Ⅰ),C=C(Ⅱ),C─C(Ⅲ),C=C─C=C(Ⅳ)的键长次序为( )。 A: Ⅰ>Ⅱ>Ⅲ>Ⅳ B: Ⅲ>Ⅱ>Ⅳ>Ⅰ C: Ⅲ>Ⅳ>Ⅱ>Ⅰ D: Ⅳ>Ⅲ>Ⅱ>Ⅰ

  • 2021-04-14 问题

    不稳定的一类化合物是: C≡C|C-C|C=C|C=C-C=C|C=C=C

    不稳定的一类化合物是: C≡C|C-C|C=C|C=C-C=C|C=C=C

  • 2022-06-29 问题

    NaNH4HPO4水溶液的质子条件式为 A: c(H+)+c(H2PO4-)+2 c(H3PO4)=c(OH-)+c(NH3) +c(PO43-) B: c(H+)+c(H2PO4-)+ c(H3PO4)=c(OH-)+c(NH3) +c(PO43-) C: c(H+)+c(NH3)+ c(H3PO4)=c(OH-)+c(PO43-) +c(H2PO4-) D: c(H+)+c(NH3)+ 2c(H3PO4)=c(OH-)+c(PO43-) +c(H2PO4-)

    NaNH4HPO4水溶液的质子条件式为 A: c(H+)+c(H2PO4-)+2 c(H3PO4)=c(OH-)+c(NH3) +c(PO43-) B: c(H+)+c(H2PO4-)+ c(H3PO4)=c(OH-)+c(NH3) +c(PO43-) C: c(H+)+c(NH3)+ c(H3PO4)=c(OH-)+c(PO43-) +c(H2PO4-) D: c(H+)+c(NH3)+ 2c(H3PO4)=c(OH-)+c(PO43-) +c(H2PO4-)

  • 2022-05-29 问题

    比较C≡C(I),C=C(II),C─C(III),C=C─C=C(IV)的键长次序为:

    比较C≡C(I),C=C(II),C─C(III),C=C─C=C(IV)的键长次序为:

  • 2022-06-19 问题

    在同一种固体介质中,纵波、横波、表面波三者之间的声速关系为() A: C﹤C﹤C B: C﹤C﹤C C: C﹤C﹤C D: C﹤C﹤C

    在同一种固体介质中,纵波、横波、表面波三者之间的声速关系为() A: C﹤C﹤C B: C﹤C﹤C C: C﹤C﹤C D: C﹤C﹤C

  • 2021-04-14 问题

    scanf(“%c%c%c“, &a,&b,&c)与scanf(“%c %c %c“ ,&a,&b,&c)的输入( )。

    scanf(“%c%c%c“, &a,&b,&c)与scanf(“%c %c %c“ ,&a,&b,&c)的输入( )。

  • 2022-10-24 问题

    能产生共轭效应的是 A: C=C=C B: C=C C: C≡C D: C=C-C=C E: C-C

    能产生共轭效应的是 A: C=C=C B: C=C C: C≡C D: C=C-C=C E: C-C

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