下列各物质完全燃烧,产物除二氧化碳和水外,还有其他物质的是 

下列各物质完全燃烧,产物除二氧化碳和水外,还有其他物质的是       

   A、蛋白质                B、葡萄糖   

C、油脂                  D、天然橡胶

答案

A

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