【名词&注释】
压缩空气(compressed air)、干燥机(dryer)、离心泵(centrifugal pump)、传热系数(heat transfer coefficient)、主换热器(main heat exchanger)、干粉灭火器(powder fire extinguisher)、电器设备(electrical circuitry equipment)
[单选题]电器设备(electrical circuitry equipment)着火时,须用()灭火
A. A、泡沫灭火器
B. B、水
C. C、蒸汽
D. D、干粉灭火器(powder fire extinguisher)