在“探究鱼鳍与运动的关系 的实验设计中正确的是 A剪去鱼的胸鳍并设置对照实验观察尾鳍的作用b将鱼的胸鳍和腹鳍用纱布固定并设置 Template




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tomski在“探究鱼鳍与运动的关系 的实验设计中正确的是 a剪去鱼的胸鳍并设置对照实验观察尾鳍的作用b将鱼的胸鳍和腹鳍用纱布固定并设置 coloring