第2题: [单项选择]铅管样强直是指() A. 触摸肌肉,坚实感,伸屈肢体时阻力增加 B. 在被动伸屈其肢体时,起始阻力大,终末突然阻力减弱 C. 伸肌和屈肌的肌张力均增高,做被动运动时各个方向的阻力增加均匀一致 D. 骨骼肌受到外力牵拉时产生收缩反应 E. 肌肉松软,伸屈其肢体时阻力低,关节运动范围扩大 参考答案:C
第14题: [单项选择]The signal man assisting a crane operator has his arm extended with his fingers closed and thumb pointing upward. This is the signal to(). A. raise the boom B. raise the hook C. raise the boom and hook D. check the boom stop 参考答案:A