A.上界到胸骨切跡,下界到劍突 B.上界到喉頭,下界距上界3cm-4cm C.上界到下頜骨下緣上1cm,下界到胸十下緣 D.上界到耳垂,下界到胸十 E.上界到下頜骨,下界到胸十二
A.一般為45°-60°之間,少數(shù)病人可以適當(dāng)增減 B.60-80° C.5° D.10-30° E.90-100°
A.20-25° B.25-30° C.30-40° D.5-20° E.≥40°