K.切换开关 Change-over switch.
L.三级双掷选择开关 Selected switch three ploes and two lauches.
M.自动,手动,起动三位置传换开关,起动自复位,起动后必须经过停上档位才能转向自动档位. Change-over switch with automation,hand,starting.Convert to automation through stop location.
N.与万能结构略有不同,起动后不经停止档位直接转向自动档位.Little different from unniversal structure,it don't pas