塑料基托的厚度约为A.0.25mm B.2mm C.0.75mm D.1mm E.0.5mm

admin2020-12-24  0

问题 塑料基托的厚度约为

选项 A.0.25mm
B.2mm
C.0.75mm
D.1mm
E.0.5mm

答案B

解析
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