A.機油加熱或火焰加熱后用拆卸工具拆卸 B.榔頭直接敲擊 C.榔頭加墊銅棒或鋁板敲擊 D.壓力機等擠壓
A.10°~20° B.20°~30° C.30°~40° D.40°~50°
A.10 B.15 C.17 D.20