判断题 焦虑心理是个体的一种内在的心理活动，也是一种特殊的外显行为。

单项选择题 （）says that if a written contract is a complete and final statement of the parties agreement, any prior or contemporaneous oral or written statements that alter, contradict, or are in addition to the terms of the written contract are inadmissible in court regarding a dispute over the contract.

问答题 简述房屋维修与管理的意义。