【空調版】毎日一問20171129
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通風および空調工事における垂直井内の立管は、（）階ごとに案内支持架を設置しなければならない。 A、2—3 B、3—4 C、4—5 D、5
通風および空調工事における垂直井内の立管は、（）階ごとに案内支持架を設置しなければならない。 A、2—3
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