Which of the following timber products can be recycled? A: plywood B: LVL C: Glulam D: particle board
Which of the following timber products can be recycled? A: plywood B: LVL C: Glulam D: particle board
以下哪几种人造板产品属于结构人造板（）。 A: OSB B: LVL C: MDF D: PSL E: GLULAM
以下哪几种人造板产品属于结构人造板（）。 A: OSB B: LVL C: MDF D: PSL E: GLULAM
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