0054名無しさん@1周年垢版2018/11/09(金) 19:21:04.29ID:ZXkI/6//0 >>1 一方 笹子トンネル天井板落下事故 https://upload.wikimedia.org/wikipedia/commons/thumb/1/11/Sasago_Tunnel%28Ch%C5%AB%C5%8D_Expwy%29_collapsed_3D_model_2.png/480px-Sasago_Tunnel%28Ch%C5%AB%C5%8D_Expwy%29_collapsed_3D_model_2.png