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環境保護 デイリーステッカー 6月21日 参加賞3 正解するとさらに3

2016-06-21View Original

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単一選択問題;各レベルの交通機関の( )は、船舶による汚染を監督・管理する機関である。 A. 水上巡警 B. 航運管理部門 C. 航政機関 D. 航道管理部門。C

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