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日前,接连看到两起有关工程事故的报道:某省国道线上一座60多米长的新建大桥,通车后不足百天便突然崩塌,当时幸无车辆通行,没有造成人员伤亡;四川省某市一座综
A few days ago, two accidents were reported: A new over 60-meter-long bridge on the national highway of a province suddenly collapsed after being opened for less than 100 days. At that time, it was fortunate that there was no traffic and no casualties occurred; a city in Sichuan Province A comprehensive