【毎日一問】工程基礎知識（選択問題）20200328
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機械シールが動作する際、動環と静環の端面には（A、B）を含む極めて薄い液体膜が保たれ、潤滑およびシールの役割を果たします。 A. 流体動圧力 B. 静圧力 C. 弾性張力 D. 摩擦力
答え A/B 液体の動圧力と静圧力
A. 流体動圧力 B. 静圧力
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