单选题:装修材料施涂于A级基材上,湿涂覆比小于(  )kg/m2的有机装饰涂料,可作为B1级装修材料使用。

题目内容:
装修材料施涂于A级基材上,湿涂覆比小于(  )kg/m2的有机装饰涂料,可作为B1级装修材料使用。 A.1
B.1.5
C.2
D.2.5

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