1 . 声强级
(单位:
) 与声强
(单位:
)之间的关系是:
, 其中
指的是人能听到的最低声强,对应的声强级称为闻阈.人能承受的最大声强为
,对应的声强级为
,称为痛阈.某歌唱家唱歌时,声强级范围为
(单位:
).下列选项中错误的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cd5af46d7d4cad42a8088549534cddf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca586d4c35ce52dec4b545cf13ee0721.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e105760638b22b26ff8bec4354255e4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84e37af4ef30b2d7833c4ac32bf474d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e942d7a27c860e7a862cd3a2e2efaae1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84abbfb85a00f48b5db11eeb76b8d134.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c96f2150d8aaa7bcce9df90839a1664e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d32123578507f6faea3afcb8a4fe08f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ddba8b7b8513f05e05302d594170aeed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca586d4c35ce52dec4b545cf13ee0721.png)
A.闻阈的声强级为![]() |
B.此歌唱家唱歌时的声强范围![]() ![]() |
C.如果声强变为原来的![]() ![]() |
D.声强级增加![]() ![]() |
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