[" [{"每日一문은"},{" 泵设备技术交流版"},{"참여： 3财富；"},{"참가가 맞은 답변: 3财富；"},{"注：48小时内回答正确奖励48财富，此贴有效时间48小时。 多"},{"多选题： 单级叶轮轴D的的平衡方法有有有。有（。。"},{"A、背叶片 B、口环加平衡孔 C、平衡鼓 D、采用双吸式叶轮D正确正确答案：ABD D 平衡鼓用于DD级级泵"},{"z [{"z、背叶片 BzDz、口环加平衡孔BzDz、平衡鼓 DzDz、采用采用吸式叶轮BzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzDzD"}

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