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问题描述：

[单选] 数控机床工作时，若出现异常现象需要紧急处理，应启用复位功能。（）
A．A) 正确 B．B) 错误
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答案解析：无
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上一篇：所有数控机床都要求主传动系统有很大的调速范围和较小的热变形。（） 下一篇：变频器的主回路上通常用二极管作为可控桥式整流电路的整流元件。（）

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