你到达一个平交道口，看到红灯闪烁且栏杆已落下。你什么时候可以通行？

211. 你到达一个平交道口，看到红灯闪烁且栏杆已落下。你什么时候可以通行？

单选题正确率: 80%

A. 当红灯熄灭时 B. 当可以安全通行时 C. 当栏杆升起时 D. 当以上所有条件都满足时

恭喜，答对了！ {{vm.result.explain}}

答案不正确！ {{vm.result.explain}}

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