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毎日1問、正解しても賞品なし、娯楽を目的とする

2019-12-05View Original

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33.回転部品が不平衡になる主な原因は()です。?A、回転速度が高すぎる B、ベアリングの精度が低すぎる C、質量分布が均一でない D、長径比が大きい 昨日の問題の答え:D 32.支持台の穴と主軸の前後の部分の()誤差により、ベアリングの内円面と外円面が相対的に傾く。A、平行度 B、位置度 C、円跳動 D、同軸度

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