多项选择题
A.HV1401 B.XCV1401A C.XCV1401B D.FV1401
A.FV1121A B.FV1115A C.FV1116 D.FV1115B
A.机泵出口压力表读数大幅度变化,电流表读数波动大 B.泵体及管线内有噼啪作响的声音 C.出口流量小 D.电机烧坏