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【单选题】
互联互通FAO(I-FAO)是指轨道交通路网内，装载不同厂商信号设备的全自动运行列车( )，从而实现轨道交通路网间的联通、联运。在互联互通CBTC和FAO基础上再进一步，实现互联互通线路的资源优化和网络化运营。A.
跨线和共线运行
B.
跨线运行
C.
共线运行
D.
独立运行
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