Which of the following devices can be used as an alternative to ordinary loudspeakers to better receive voice signals in noisy environments? Headphones.
下列哪一种设备可以用来代替普通的扬声器，可在嘈杂的环境中更好地抄收语音信号？耳机。
| 正面 | LK1122 下列哪种设备可以用来代替普通的扬声器，可在嘈杂的环境中更好地抄收语音信号？ |
|---|---|
| 背面 | 耳机 |
Tags: 故障
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