A.1倍鋼絲繩直徑深度時 B.1.5倍鋼絲繩直徑深度時 C.2倍鋼絲繩直徑深度時 D.2.5倍鋼絲繩直徑深度時
A.0.5根鋼絲繩直徑,1根鋼絲繩直徑 B.1根鋼絲繩直徑,70mm C.1.5根鋼絲繩直徑,70mm D.2根鋼絲繩直徑,50mm
A.1m/s2 B.0.5m/s2 C.0.75m/s2 D.1.2m/s2