A.0.5cm B.1cm C.1.5~2cm D.2.5~3cm E.3.5cm
A.預置的內切線的鉛絲 B.預置的外切線的鉛絲 C.預置的內切線鉛絲外1cm D.體中線偏患側1cm E.預置的內切線鉛絲內1cm
A.10°~15° B.15°~30° C.31°~40° D.45°~60° E.65°