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【单选题】
下面两个图示方案的区别是( )。 图1变风量空气处理机控制方案 图2变风量空气处理机控制方案
A.
有无加湿功能
B.
第2个图分站根据其内部时钟确定夏季的设定温度，比较传感器所采集的室温，调节器交换器盘管的三通调节阀，以使回风温度与设定湿度一致
C.
第2个图只有风机确实起动，空气流量开关探测到风压后，温度控制程序才会工作
D.
第2个图分站根据其内部时钟确定冬季的设定温度，比较采集的回风温度，按差值调节热交换器盘管的三通调节阀，以使回风温度与设定温度一致
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