已知五个技术站的编组方案为:3+0,2,1;2,1+0;1+0;0。该方案共开行几支直达列流【 】A.1B.2C.3D.4E.5F.0
已知五个技术站的编组方案为:3+0,2,1;2,1+0;1+0;0。该方案共开行几支直达列流【 】
A.1
B.2
C.3
D.4
E.5
F.0
参考答案和解析
3
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