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【判断题】
在滚珠丝杠副轴向间隙的调整方法中,常用双螺母结构形式,其中以齿差调隙式调整最为精确方便。A.
正确
B.
错误
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举一反三
【简答题】This is a story that happened 15 years ago but it has always stayed with me since then.On the way back from work every evening,more often than not there would be a homeless man standing at the exit o...
【单选题】The old man told us most of the story, but _______ the part about the murder.A．kept upB．kept ba
A.
181. The old man told us most of the story, but _______ the part about the murder. A．kept up
B.
kept back
C.
kept out
D.
kept down
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