A关闭大翼防冰电磁活门(WTAISOLENOIDVALVE)
B打开大翼防冰电磁活门(WTAISOLENOIDVALVE)
C关闭大翼防冰关断活门(WTAISHUTOFFVALVE)
D打开大翼防冰关断活门(WTAISHUTOFFVALVE)
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