最終更新日：2025/11/27
During the drill, we descended the fire tower stairway, a concrete-encased enclosure entered through a pressurized air lock that prevents smoke from entering in the event of a fire.
正解を見る
During the drill, we descended the fire tower stairway, a concrete-encased enclosure entered through a pressurized air lock that prevents smoke from entering in the event of a fire.
音声機能が動作しない場合はこちらをご確認ください
編集履歴（0）
