A.氣胸 B.局麻藥中毒 C.Horner征 D.全脊麻 E.聲嘶
A.C2神經(jīng)阻滯 B.C3神經(jīng)阻滯 C.C4神經(jīng)阻滯 D.C5神經(jīng)阻滯 E.C6神經(jīng)阻滯
A.C2 B.C3 C.C4 D.C5 E.C6