A.裂解反應(yīng)B.加成反應(yīng)C.取代反應(yīng)D.裂化反應(yīng)
A.100B.120C.150D.170
A.適當(dāng)提高氫氣流量B.適當(dāng)降低氫氣流量C.提高原料量D.降低進(jìn)口溫度