A.轉向架兩端輪對軸箱上 B.中間輪對軸箱上 C.任意軸箱上 D.機車中間輪對軸箱上
A.±2% B.±4% C.±3% D.±1%
A.0.1~0.15mm B.0.25~0.4mm C.0.4~0.6mm D.0.6~0.9mm