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毎日1問、正解しても賞品なし、娯楽を目的としています

2019-11-04View Original

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4.カルシウム系グリースは(?????)の性能を持っている。?A、耐熱 ?B、耐水性 ?C、放熱 昨日の問題の正解はAでした。回転軸受の外輪と軸受ケースの合わせ基準は(?A?)です。?A、基軸制 ?B、基孔制 ?C、非標準制

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