题目内容 (请给出正确答案)
提问人:网友f******g 发布时间:2023年1月16日 08:11
[单项选择题]

涉及结构安全的试块、试件和材料进行有见证取样和送检的比例不得低于有关技术标准中规定应取样数量的()

A、10%

B、30%

C、25%

D、20%

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