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14．某初中生物研究性学习小组的同学在探究“馒头在口腔中的变化 课题时准备了馒头唾液清水碘液恒温箱等实验材料和设备设计了如下实验 Template






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tomski14．某初中生物研究性学习小组的同学在探究“馒头在口腔中的变化 课题时准备了馒头唾液清水碘液恒温箱等实验材料和设备设计了如下实验 coloring
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下面是某生物研究性学习小组的同学在探究“馒头在口腔中的变化 时设计的实验方案和获得的实验结果其中4支试管中加入等量的馒头碎及2毫升清水 sketch template
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某初中生物研究性学习小组的同学在探究“馒头在口腔中的变化 课题时准备了馒头．唾液．清水．碘液．恒温箱等实验材料和设备设计了如下实验方案 sketch template
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下面是某生物研究性学习小组的同学在探究“馒头在口腔中的变化 时设计的实验方案和获得的实验结果其中4支试管中加入等量的馒头碎及2毫升清水 sketch template
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题目某中学生物兴趣小组的同学在探究“馒头在口腔中的变化 实验时设计了如表所示的实验方案请完成下列问题试管编号123馒头碎或块适量 sketch template
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某初中学校生物研究性学习小组的同学在探究“馒头在口腔中的变化 课题时准备了馒头唾液清水碘液恒温箱等实验设备和材料．设计了如下实验 sketch template
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某同学探究了“馒头在口腔中的变化 其操作步骤实验现象和实验结论如下 实验现象试管内的溶液不变蓝实验结论馒头变甜与牙齿咀嚼舌的搅拌 sketch template
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下面是某生物兴趣小组的同学所做的“馒头在口腔中的变化 探究实验实验过程1号试管加入馒头碎和2mL唾液并充分搅拌2号试管加入馒头 sketch template
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题目下表是“馒头在口腔中的变化 的探究实验步骤请根据此表回答问题1加入碘液后变成蓝色的试管有 2若以1和2为一组对照实验 sketch template