单项选择题
A.5厘板 B.9厘板 C.15mm细木工板 D.18mm细木工板
A.200mm~300mm B.200mm~350mm C.200mm~400mm D.200mm~450mm
A.5% B.8% C.10% D.12%
A.5mm B.10mm C.15mm D.20mm
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