單項(xiàng)選擇題關(guān)閉隔膜泵回流閥,現(xiàn)場(chǎng)人員對(duì)隔膜泵進(jìn)行憋壓,高溫保持隔膜泵出口壓力在();低溫保持隔膜泵出口壓力在()

A.3.5Mpa~4.0Mpa;1.0Mpa~2.5Mpa
B.3.0Mpa~4.0Mpa;1.0Mpa~1.8Mpa
C.3.5Mpa~4.0Mpa ;1.0Mpa~1.5Mpa


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