选择题:鉴定电气设备绝缘强度最直接的方法是()A.电容比的测量 B.冲击波试验 C.直流耐压试验 D.交流耐压试验

题目内容:

鉴定电气设备绝缘强度最直接的方法是()

A.电容比的测量 B.冲击波试验 C.直流耐压试验 D.交流耐压试验

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数控车床的特点是Z轴进给1mm,零件的直径减小2mm。()A.正确B.错误

数控车床的特点是Z轴进给1mm,零件的直径减小2mm。()A.正确B.错误

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