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【空調版】毎日一問20171205

2017-12-05View Original

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換気・空調工事において、亜鉛メッキ鋼管の接続については、一般的に次のように定められている。管径がDN100を超える場合、使用できる接続方法は()である。 A、人工ねじ切り接続 B、フランジ接続 C、溶接接続 D、機械ねじ切り接続 E、クランプ式接続

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