[名词解释] 道岔侧线 siding of turnout
[名词解释] 道岔中心 center of turnout
[名词解释] 道岔号数 turnout number
[名词解释] 对开道岔 symmetrical turnout
[名词解释] 道岔主线 main line of turnout
[名词解释] 道岔导曲线 lead curve of turnout
[名词解释] 三开道岔 three-throw turnout
[单选题]建筑基地内单车道宽度与双车道宽度不应小于( )。A.3m和6mB.3.5m和7mC.4m和7mD.4m和8m
[单选题]CNG加气母站内单车道或单车停车位宽度不应小于()。A . 9mB . 4mC . 4.5mD . 6m
[单选题]压缩天然气加气母站内单车道或单车停车位宽度不应小于______,双车道或双车停车位宽度不应小于______。横线上应填数据为( )A.4m,6mB.4.5m,6mC.4m,9mD.4.5m,9m