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【单选题】


A、workErs on thE plAtForms AnD trAins wErE rEplACED By mAChinEs.
B．
A、ComplEtEly AutomAtiC linE wAs ADDED to its nEtwork.
C．it BECAmE thE First ComplEtEly AutomAtiC rAilwAy in thE worl
D、
D、its trAins BECAmE mAnuAl-ControllE
D、

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根据网考网移动考试中心的统计，该试题：

5%的考友选择了A选项

74%的考友选择了B选项

11%的考友选择了C选项

10%的考友选择了D选项

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