During the period when he was in hospital, I _____ him to give up smoking but he still smokes. [ ]

A. persuaded

B. advised

C. thought

D. suggested

丙烯干燥器备用速度过快，波动较大的是（）。

A．碳三加氢反应器

B．高压脱丙烷塔回流罐液位

C．低压脱丙烷塔

D．碳二加氢反应器