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【毎日一問】工程基礎知識(選択問題)20200225

2020-02-25View Original

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管殻式熱交換器の良好な状態の基準によれば、同一の管程内で詰まっている管の数は、総数の(B)を超えてはならない。 A.5% B.10% C.15% D.20%

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