关于校准与检定的含义，下列说法错误的是( )。
A．校准既具有法制性，又是企业自愿溯源行为
B．检定具有法制性，属于计量管理范畴的执法行为
C．检定结果不论合格与否，都发检定证书
D．强制检定的对象是企业所有计量器具
E．校准必须判断测量仪器合格与否
参考答案：A,C,D,E
解析： 本题考查计量基础中对校准与检定概念相关知识点的理解和掌握。校准是指在规定的条件下，为确定测量仪器(或测量系统)所指示的量值或实物量具(或参考物质)所代表的量值，与对应的由其测量标准所复现的量值之间关系的一组操作。检定是指查明和确认测量仪器是否符合法定要求的程序，它包括检查、加标记和(或)出具检定证书。检定具有法制性，其对象是法制管理范围内的测量仪器。所以，校准和检定是实现量值溯源的最主要的技术手段。故ACDE四项不符合定义要求是本题的答案。B的说法正确，却不是本题答案。
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