["一日一題", "離、�Compress機運行時開大出口閥時出口壓力將(A " "A、下降 B、上升 C、無變化 D、不一定 �"]
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离心泵运行时，开大出口阀，出口压力将( ) A、降低 B、增加 C、无变化 D、不一定 答案： A
离心泵运行时，开大出口阀，出口压力将(A ) A、降低 B、增加 C、无变化 D、不一定
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