为了实现挂钩和摘钩,车钩有三种位臵()位臵、开锁位臵、全开位臵。
参考答案:锁闭
Your school things are here and there, will you please _______?
A.put them away
B.to put them away
C.put away them
D.throw them about
确定脊髓损伤的运动神经平面最重要的依据是()。
A.关键肌
B.关键点
C.运动平面
D.感觉平面
E.膈肌作为运动平面