A. BLOWER(供气风扇)及EXTRACT FAULT(排气风扇故障)灯都亮 BLOWER(供气风扇)灯灭EXTRACT FAULT(排气风扇故障)灯亮 C. BLOWER(供气风扇)灯亮EXTRACT FAULT(排气风扇故障)灯灭
A. 正确 B. 错误
A. is B. are C. being D. having