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下列化合物最稳定的构象是()
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·<img title=\"6531076495662266\" alt=\"8.jpg\" src=\"https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/ueditor/jsp/upload/image/20151117/1447733800087034040_8.jpg\"/>
·<img title=\"6789810585869473\" alt=\"8.jpg\" src=\"https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/ueditor/jsp/upload/image/20151117/1447733874344029797_8.jpg\"/>
·<img title=\"5072096274815073\" alt=\"8.jpg\" src=\"https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/ueditor/jsp/upload/image/20151117/1447733910587068681_8.jpg\"/>

参考答案