请根据“鱼尾鳍的血液流动 的观察实验回答下列问题1用浸湿的棉花包住小鱼头部鳃盖其目的是使鱼的 保持湿润以维持鱼的 作用的进行.2 Template




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tomski请根据“鱼尾鳍的血液流动 的观察实验回答下列问题1用浸湿的棉花包住小鱼头部鳃盖其目的是使鱼的 保持湿润以维持鱼的 coloring