A.≥98.5%(WT) B.≥99%.(WT) C.≤1%(WT) D.≥98%(WT)
A.≥98.5%(WT) B.≤0.5%(WT) C.≤1%(WT) D.≥98%(WT)
A.提餾塔底泵 B.冷卻回流泵 C.脫氫反應(yīng)進(jìn)料泵 D.提餾塔進(jìn)料泵