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【Вентиляция и кондиционирование】Одно задание в день 20171215

2017-12-15View Original

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Обычно для соединения неметаллических водопроводных труб из UPVC (поливинилхлоридных труб) используется метод ( ). А Сварка Б Соединение путем вставки и склеивания В Соединение фланцами Г Резьбовое соединение Правильный ответ: B

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