卫生学评价声音强度大小的常用单位为A.声压级B.声功率级C.声强级D.声频大小E.以上均不正确

作者: rantiku 人气: - 评论: 0
问题 卫生学评价声音强度大小的常用单位为
选项 A.声压级 B.声功率级 C.声强级 D.声频大小 E.以上均不正确
答案 A
解析

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