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

admin2020-12-24 47

问题铸

支托的厚度不得低于 ( )

选项 A.5.0mm
B.0.8mnm
C.3.0mm
D.1.3mm
E.0.5mm

答案D

解析

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