41 Emergency warning_____ can be electro..-阿摩線上測驗
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5F 劉柏宏 小三下 (2021/09/16)
Emergency warning (sirens) can be electronic or manual and are designed to alert members of the public and other road users by sound that an emergency vehicle is approaching. 緊急警報警報器可以是電子的或手動的,旨在通過聲音提醒公眾和其他道路使用者有緊急車輛接近。 sirens警報器 electronic電子的 (A)lights 燈 |