The signals that will be used for emergency should be clearly set out.（）A、用于应急和消防部署的信号必须清楚地说出。B、用于救生和消防部署的信号必须清楚地列出。C、用于应急的信号必须清楚地列出。D、用于应急和救生部署的演习必须清楚地列出。
The signals that will be used for emergency should be clearly set out.（）
- A、用于应急和消防部署的信号必须清楚地说出。
- B、用于救生和消防部署的信号必须清楚地列出。
- C、用于应急的信号必须清楚地列出。
- D、用于应急和救生部署的演习必须清楚地列出。
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