A .70
B .280
C .60
D .150
[单选题]通风系统风管上设置的防火阀,其动作温度为()qC。A .70B .280C .60D .150
[单选题]通风系统风管上设置的防火阀,其动作温度为()qC。A .70B .280C .60D .150
[单选题]通风系统风管上设置的防火阀,其动作温度为()qC。A .70B .280C .60D .150
[单选题]通风系统风管上设置的防火阀,其动作温度为()qC。A .70B .280C .60D .150
[单选题]通风系统风管上设置的防火阀,其动作温度为()qC。A .70B .280C .60D .150
[单选题]通风系统风管上设置的防火阀,其动作温度为()qC。A .70B .280C .60D .150
[单选题]通风系统风管上设置的防火阀,其动作温度为()qC。A .70B .280C .60D .150
[单选题]通风系统风管上设置的防火阀,其动作温度为()qC。A .70B .280C .60D .150
[单选题]通风系统风管上设置的防火阀,其动作温度为()qC。A .70B .280C .60D .150
[单选题]通风系统风管上设置的防火阀,其动作温度为()qC。A .70B .280C .60D .150
[单选题]通风系统风管上设置的防火阀,其动作温度为()qC。A .70B .280C .60D .150