题目内容:
铸支托的厚度不得低于 ( )
A.5.0mm B.0.8mnm C.3.0mm D.1.3mm E.0.5mm
参考答案:
铸支托的厚度不得低于 ( )
A.5.0mm B.0.8mnm C.3.0mm D.1.3mm E.0.5mm