A.220~380V B.380~660V C.360~400V D.380~400V
A.20s B.30s C.40s D.50s
A.按照停泵操作規(guī)程停運待停泵 B.導(dǎo)通備用泵流程 C.認真檢查備用泵是否具備啟動條件 D.啟動備用泵