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单选题
431.调温空气调压活门(配平空气压力调节活门)的功能是( )What is the function of the Trim Air Pressure Regulating Valve
A
调节热空气的压力,使管道下游压力低于客舱压力 Adjust the trim air pressure, the downstream pressure below the cabin pressure
B
调节热空气的压力,使管道下游压力高于客舱压力 Adjust the trim air pressure, the downstream pressure above the cabin pressure
C
调节冷空气的压力,使管道下游压力低于客舱压力Adjust the cold air pressure, the downstream pressure above the cabin pressure
答案解析
正确答案：B
解析：
调温空气调压活门(配平空气压力调节活门)的功能是( )
答案: B
解析: 调温空气调压活门的功能是调节热空气的压力，使管道下游的压力高于客舱压力。这有助于确保适当的空气温度和压力在客舱内。选项 B 正确地描述了这一功能，即调节热空气的压力，使管道下游压力高于客舱压力。
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