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["Chaque jour un exercice, La participation est gratuite, l'essstance est de s'amuser.", "4. Le lubrifiant à base de calcium a les propriétés suivantesnes : ?A. Thermique??B. Aquatique??C. Thermique? La réponse correct' hier était A. La base de l'ecrou externe du roulement n'est pas le suivante : ?A.. Basé sur l'axe?B. Basé sur l'origotC. Non standardisé"

2019-11-04View Original

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4.钙基润滑脂具有(?????)性能。?A、耐热??B、抗水??C、散热? 昨天一题正确答案是A, .滚动轴承外圈与轴承箱的配合基准应是(?A?)。?A、基轴制??B、基孔制??C、非标制

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