儿童的设备应符合安全要求，其中发响玩具的最大响度不超过( )分贝。-湖北继续教育网网校

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[单选题]儿童的设备应符合安全要求，其中发响玩具的最大响度不超过( )分贝。

Aa 100b 90c 80d 70

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