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木材的密度平均约为（ ）
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木材的密度平均约为（ ）
A、0.55g/cm3
B、1.05g/cm3
C、0.05g/cm3
D、1.55g/cm3
时间：2021-09-08 14:12
关键词：
国家开放大学
建筑材料(A)
答案解析
D
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