L5损伤平面的关键肌为()
A.趾长伸肌
B.屈髋肌(髂腰肌)
C.伸膝肌(股四头肌)
D.足背伸肌(胫骨前肌)
E.踝跖屈肌(腓肠肌、比目鱼肌)
参考答案:A
先天性支气管扩张由于支气管软骨发育缺陷所致,常见于()
A.婴儿
B.年长儿
C.幼儿
D.学龄前儿童
E.学龄期儿童
________ the calculation is right, scientists can never be sure that they have included all variables and modeled them accurately.
A.Even if
B.As far as
C.If only
D.So long as