Speaker A: Terry is strange. He always complains about things.Speaker B: ______

A．I don't know Terry, so I don't know whether what you have said is true or not.

B．So do I. He is hard to get along with.

C．Yeah. He's very difficult to please. He criticizes everything and everybody.

D．I don't like talking with strangers like Terry.

（）是指与民航生产保障单位签订建设、委托经营或租赁等合同的单位。

A.委托单位

B.民航单位

C.联检单位

D.临时单位