This adapter is passive during normal operation, and waits for a failure to occur.
在常规操作中，该适配器是被动的，并一直等待发生故障。
2
Result: Scorings of anxiety and depression emotion, and passive coping in patients of intervention group on the 10th day after operation were remarkably lower than that of control group (P<0.01).
手术后第10天干预组病人焦虑、抑郁情绪、消极应对得分显著低于对照组（P<0.01）；
3
Because the operation is passive, intruders cannot identify the area being protected.