工芸基礎知識（選択問題）20181114
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我が国では、船舶用冷蔵庫の温度上昇試験において、断熱材が十分に冷却された後に停止して温度上昇を測定することと規定されている。 A．6時間 B.8時間 C.10時間 D.12時間
D.12h#こちらで迅速に返信#
D.12h#こちらで迅速に返信#
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