有位管工去检修一个仅有两米多高的水箱 ,班长嘱其戴上安全帽。他看了水箱一眼后 ,嘴里咕噜道 :这么点高的地方还用戴安全帽 ?真是小题大作。话毕登高 ,却不料铁制扶梯横档被水腐蚀后生锈 ,经不住攀爬而断裂 ,使他摔在了下面的水泥地上 ,因后脑勺着地 ,经抢救无效而死亡。如果 A supervisor to overhaul a tank of only two meters high, the squad instructed to wear a helmet. He glanced at the tank, his mouth murmured: At such a high place is also wearing a helmet? Really a fuss. However, after the completion of the escalator, the railings were corroded by water and rust. They could not withstand the climbing and fractured them. They fell on the concrete floor below and landed behind the back of the head because of the invalid rescue. in case