A.疲勞強(qiáng)度 B.高低溫性能 C.韌性 D.強(qiáng)度
A.1480mm B.1560mm C.1620mm D.1680mm
A.0.1mm B.0.15mm C.0.20mm D.0.25mm
A.60% B.75% C.80% D.85%
A.l:30 B.l:50 C.l:80 D.l:100
A.200mm B.300mm C.350mm D.400mm
A.1200mm B.1210mm C.1230mm D.1250mm
A.20鋼 B.45鋼 C.30鋼 D.35鋼
A.轉(zhuǎn)向架兩端 B.轉(zhuǎn)向架中間 C.機(jī)車兩端 D.機(jī)車中間