单选：机床原点的位置（）。A．只可在加工程序中设定B．由厂家确定C．在加工前设定D．每次开机时设定

题目内容：
机床原点的位置（）。
A．只可在加工程序中设定
B．由厂家确定
C．在加工前设定
D．每次开机时设定
参考答案：

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分类：机械制造行业技能考试  题型：单选
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