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　　若是要把直流电机箱体中的油全部排掉，可以拧下箱体下部的放油塞，将油排掉。直流电机在外排油的情况下，液面距离油箱顶板高度不要超过30毫米，以保证机内各轴承的润滑和冷却。当千斤顶工作腔容积过大时，需另设付油箱，保证外排油后的液面的低高度不小于100毫米以免吸空。

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最简单的微信赚钱方法 　　XUYAOZHUYIDESHIZAIYEMIANJIANGDIDEDUANSHIJIANNEIZHOUCHENGKAOFUYOUHEZHUSAIDANHUANGDEJIANYOUDEYIRUNHUA，YOUXIANGLVYOUQIHEJIXIALVYOUQIXI230MU/CUNTONGSIWANGZHICHENG，LVYOUWANGYINGJINGCHANGQINGXIYIFANGDUSAI，SHIYONGSHIYOUXIANGYOUYEWENDUBUYINGCHAOGUO60℃，BIYAOSHICAIQUSHIDANGCUOSHILENGQUE，ZHEIYANGCAINENGBAOZHENGSHEBEIGENGSHUNLIDEPAIYOU。