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“实验测定新鲜胡萝卜(根)的含水量”是2004年全国中学生生生物学联赛北京赛区实验复赛的一道试题:A、设计实验1.请根据自己的常识估测一下新鲜的胡萝卜(根)含水量的比例。2.所选的实验测定方法要在尽可能短的时间(小于30分钟)内完成。3.写出实验操作的具体步骤。4.设计数据记录表。
“Experimental Determination of fresh carrot (root) water ” is a 2004 National Secondary Biology Test League Beijing Division trial rematch test: A, design experiment 1. Please estimate according to their own knowledge of fresh carrot (root ) The ratio of water content. 2. The method of experimental determination is chosen to be completed in the shortest possible time (less than 30 minutes). 3. Write the specific steps of the experimental operation. 4. Design data record sheet.