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【毎日のテーマ】【空調版20170228】

2017-02-28View Original

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参加報酬:2財富。正解の報酬:8富 單一選択問題:機械式排煙ダクトの材料には、必ず( )を使用しなければならない。 A:不燃材料 B:難燃材料 C:可燃材料 D:A、Bの両方の材料が可 A
Reply #22017-02-28
機械排煙ダクトの材料は(A)を使用しなければならない。 A:不燃材料 B:難燃材料 C:可燃材料 D:A、Bの両方の材料
Reply #32017-02-28
機械排煙管の材料は( A )を使用しなければならない。 A:不燃材料 B:難燃材料 C:可燃材料 D:A、Bの両方の材料

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