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討論內容： I can't get a dialling tone i don't wanna do my homework The Transportation Safety Board report followed a January2012 incident in which a section of 13 loaded coal cars crashedinto a stationary train near Hanlon, Alberta, at 56 miles perhour (90 km per hour), seriously injuring one crew member.Canadian National was faulted for providing inadequate guidanceto its crews for how to test the braking systems, particularlyon slopes.

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