不属于腋窝内侧壁的结构是()。
A.胸大肌
B.前锯肌
C.肋间内肌
D.上4对肋骨
E.肋间外肌
参考答案:A
We have to__ourselves when we are away from home.
A.look at
B.look for
C.look up
D.look after
K6型转向架有()个内圆弹簧。
A、6
B、7
C、8
D、9