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CH3CH=C(CH3)CH2CH3经催化加氢后生成什么物质?
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某炔烃经催化加氢后可得到2-甲基丁烷,则该炔烃的名称是( )
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你能帮帮他们吗
精彩回答
Checking your answers before handing in your paper can help you ________ mistakes.
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Thank you for ______ my swimming.
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