A. 平面加层足迹 B. 平面足迹 C. 平面减层足迹 D. 立体足迹
A. 弹性大 B. 坚固性强 C. 容易变形 D. 坚固性弱
A. 对 B. 错
A. hypercontraction B. intermittent contraction and relaxation C. muscle tissue wasting D. paralysis