在完成屈肘动作时�和�的状态分别是a�肱二头肌舒张�肱三头肌收缩b�肱二头肌收缩�肱三头肌舒张c�肱三头肌舒张�肱二头肌收缩d Template




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tomski在完成屈肘动作时�和�的状态分别是a�肱二头肌舒张�肱三头肌收缩b�肱二头肌收缩�肱三头肌舒张c�肱三头肌舒张�肱二头肌收缩d coloring