Upper Great Plains lineman Shayne Bender demonstrates how to use a buck hook with a self-retracting lanyard to ascend a steel lattice tower at fall protection training in Mead substation. When the ...
一些您可能无法访问的结果已被隐去。
显示无法访问的结果一些您可能无法访问的结果已被隐去。
显示无法访问的结果