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单选题
442.散货舱加温的热空气来源是( )The bulk cargo compartment Heating is performed by( )
A
客舱空气 The cabbin air
B
混合器 The mix unit
C
风扇加热器 electrical fan heater
答案解析
正确答案：C
解析：
题目解析
散货舱加温的热空气来源是( ) The bulk cargo compartment Heating is performed by( )
答案:C
解析：答案C是正确的。散货舱加温通常使用风扇加热器（electrical fan heater）来提供热空气。这些风扇加热器会将电加热的空气引入散货舱，从而保持货物的适宜温度。
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