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| − | + | A lot of accidents occur as a result of incorrect utilization of a ladders, or individuals wanting to use a chair, stool or more object to just do the job at height. | |
2016年7月21日 (木) 08:19時点における版
A lot of accidents occur as a result of incorrect utilization of a ladders, or individuals wanting to use a chair, stool or more object to just do the job at height.
