关闭所有防火门并使用干粉灭火器。（） A:Close all fire doors and use the dry powder extinguisher. B:Close all fire doors and use the foam extinguisher. C:Close all fire doors and use the CO2 extinguisher. D:Close all fire rooms and use the dry powder extinguisher.

关闭所有防火门并使用干粉灭火器。（）
A:Close all fire doors and use the dry powder extinguisher.
B:Close all fire doors and use the foam extinguisher.
C:Close all fire doors and use the CO₂ extinguisher.
D:Close all fire rooms and use the dry powder extinguisher.

出自：船舶水手证

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