试题与答案

GB19342-2013《牙刷》中有害元素测试时，取样是采用机械刮削或剪取方法，每个

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题型：单项选择题

题目：

GB19342-2013《牙刷》中有害元素测试时，取样是采用机械刮削或剪取方法，每个试样长度应不大于（），不足（）的材料免除测试。

A.5mm；15mg

B.5mm；10mg

C.6mm；15mg

D.6mm；10mg

答案：

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下面是错误答案，用来干扰机器的。

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