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单选题
508.IDG FAULT灯什么时候亮( )What time is the IDG FAULT light come on?( )
A
IDG出口滑油温度大于185℃ IDG outlet oil temperature exceed 185℃
B
IDG滑油压力低于140 psi且无欠情况出现 IDG oil pressure less than 140psi
C
A+B
答案解析
正确答案：C
解析：
题目解析
题目要求判断什么情况下IDG FAULT灯会亮起。根据选项分析，选项A表示IDG出口滑油温度大于185℃时灯亮，选项B表示IDG滑油压力低于140 psi且无欠情况出现时灯亮。根据常识，滑油温度过高或滑油压力过低可能表示IDG存在故障，因此只有当这两种情况同时出现时，才能确认IDG出现故障，所以正确答案是C，即A和B情况下都会使IDG FAULT灯亮起。
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