소방설비기사 필기 기계 10 옥내소화전 5(소방용합성수지배관 문구 개정 : 설명란 참조)
Video Statistics and Information
Channel: ABC소방
Views: 19,230
Rating: undefined out of 5
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Id: ltzjaN2MvZE
Channel Id: undefined
Length: 30min 55sec (1855 seconds)
Published: Thu Jun 17 2021
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