通常应用在深冷工程和化工管道上，用做仪表测压管线或传送有压液体管线，这种管材是( )管。

A．钛及钛合金

B．不锈钢

C．铝及铝合金

D．铜及铜合金

I like this city, and the water here seems to taste sweeter than _____ in my hometown. [ ]

A. one

B. it

C. that

D. this