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题型:单选题 题类:常考题 难易度:普通
电子式40
(1)Na2O2 {#blank#}1{#/blank#}(2)氮原子 {#blank#}2{#/blank#}(3)Na2S {#blank#}3{#/blank#}(4)H2O {#blank#}4{#/blank#}
﹣C═C﹣
─C≡C─
─CH3
─C2H5
{#blank#}1{#/blank#}
{#blank#}2{#/blank#}
{#blank#}3{#/blank#}
{#blank#}4{#/blank#}
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