《铁路交通事故应急救援和调查处理条例》，中断重大干线，铁路行车（）以上的列为较大事故。
参考答案：6小时
On hearing of the case some time later, Conan Doyle was convinced that the man was not guilty, and immediately went to work to ascertain the truth.
A. explore B. obtain C. verify D. search
资本市场按( )可分为发行市场和流通市场。
A．资金融通
B．资金流向
C．市场职能
D．金融机制
