下肢近端关键点是（）。
A.肩峰
B.拇指
C.趾
D.髂前上棘
E.胸骨中下段
参考答案：D
Get to the point, or we _______ to a real agreement. [ ]
A. won't come
B. haven't come
C. weren't coming
D. don't come
水环泵入口压力是多少？大于该值是什么原因造成的？
