A.壓縮上止點前10-15° B.壓縮上止點后10-15° C.壓縮上止點前0-5° D.壓縮上止點后0-5°
A.1.7~1.8 B.1.5~1.6 C.1.4~1.5 D.1.3~1.4
A.1.16 B.1.20 C.1.24 D.1.27