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2017 年 6 月 28 日の多肢選択式の質問。返信は 0 点から 6 点で採点されます(投稿から 1 日経つと返信は採点されません。ご返信ありがとうございます。)

2017-06-28View Original

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四肢選択問題(誤答0点) リフト逆止弁のディスクは一般的に(A)となります。 A. 円板形状 B. 円錐流線形状 C. 長方形形状 D. 円筒形状

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