不挂科搜题免费

问题:

关闭所有防火门并使用干粉灭火器。()

选项

  • Close all fire doors and use the dry powder extinguisher.

  • Close all fire doors and use the foam extinguisher.

  • Close all fire doors and use the CO

  • Close all fire rooms and use the dry powder extinguisher.

  • 答案:

    A.Close all fire doors and use the dry powder extinguisher.