－I think that animals shouldn't live in zoos.          

－ _____. The animals need freedom.             [ ]

A. I agree with you          

B. I disagree with you            

C.I agree to you              

D.I disagree to you

蒸汽凝液系统投用后，若凝液水管网不畅通，则会发生（）现象。

A、塔底液面抽空

B、塔底温度过高

C、塔顶压力超高

D、塔底温度提不起来