A.軸流泵; B.離心泵; C.雜水泵 D.潛水泵
A.10’; B.11’; C.12’ D.14’
A.通風(fēng),進(jìn)水; B.進(jìn)水,通風(fēng); C.通風(fēng),檢修; D.進(jìn)水,檢修