["[Di Ejercicio del día] Conocimiento básico de proceso (pregunta de selección)", "EsEl válvulaa de salida debe estar cerrada antes de la iniciación y el flujo se regula con la válvula de salida es B. A、 bomba de pistónes B、 bomba centrífuga C、 bomba de vó rones D、 bomba de ejejes""

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