(来学网)左侧支气管与正中矢状面夹角约为
  • A.
    (来学网)5~10°
  • B.
    (来学网)15~20°
  • C.
    (来学网)25~30°
  • D.
    (来学网)40~50°
  • E.
    (来学网)60~70°