列车运行中鸣笛方式如何要求？
["\u542c\u89c9\u4fe1\u53f7\uff0c\u957f\u58f0\u4e3a3 s\uff0c\u77ed\u58f0\u4e3a1 s\uff0c\u97f3\u54cd\u95f4\u9694\u4e3a1 s\u3002\u91cd\u590d\u9e23\u793a\u65f6\uff0c\u987b\u95f4\u96945 s\u4ee5\u4e0a\u3002"]
列车运行中鸣笛方式如何要求？
["\u542c\u89c9\u4fe1\u53f7\uff0c\u957f\u58f0\u4e3a3 s\uff0c\u77ed\u58f0\u4e3a1 s\uff0c\u97f3\u54cd\u95f4\u9694\u4e3a1 s\u3002\u91cd\u590d\u9e23\u793a\u65f6\uff0c\u987b\u95f4\u96945 s\u4ee5\u4e0a\u3002"]