
Recreational diving services - Requirements for the training of scuba instructors Part 2: Level 2 (ISO 24802-2:2014)
出版:German Institute for Standardisation (Deutsches Institut für Normung)

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Recreational diving services - Requirements for the training of scuba instructors Part 2: Level 2 (ISO 24802-2:2014)
出版:German Institute for Standardisation (Deutsches Institut für Normung)
专家解读视频