guest Moderator 管理成员 注册 2002-10-07 消息 402,591 荣誉分数 76 声望点数 228 2013-12-19 #1 The dramatic helicopter rescue of a worker in Kingston, Ont., highlights the lack of proper protocol when it comes to fires near tower cranes, according to the agency in charge of training crane operators. 查看原文...
The dramatic helicopter rescue of a worker in Kingston, Ont., highlights the lack of proper protocol when it comes to fires near tower cranes, according to the agency in charge of training crane operators. 查看原文...
