A.漏水B.漏氣C.松動D.脫落E.滲油
A.滑絲故障B.退化型故障C.松脫型故障D.失調(diào)型故障E.堵塞與滲漏型故障
A.晚期故障期B.中期故障期C.偶發(fā)故障期D.損耗故障期E.后期故障期