大理石镜面板材镜向光泽值应不低于( )光泽单位。A.60 B.70 C.80 D.90

作者: tihaiku 人气: - 评论: 0

问题大理石镜面板材镜向光泽值应不低于( )光泽单位。

选项 A.60 B.70 C.80 D.90

答案 B

解析教材P35页大理石镜面板材镜向光泽值应不低于70光泽单位。

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