问题
单项选择题
对于长期闲置的数控机床，应对数控装置的保养一般是（）。
A.每年通电1～2次
B.每年通电3～5次
C.每月通电1～2次
D.每周通电1～2次
答案
参考答案：C
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对于长期闲置的数控机床，应对数控装置的保养一般是（）。
A.每年通电1～2次
B.每年通电3～5次
C.每月通电1～2次
D.每周通电1～2次
参考答案：C
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