眼房水回流于(). ["泪囊","下鼻道","上矢状窦","海绵窦","巩膜静脉窦"]
拱坝理想地形的条件有:()。 ["左右两岸对称","岸坡平顺无突变","在平面上向下游收缩的峡谷段","不对称河谷"]
经营大陆居民赴台旅游业务的组团社,须要求接待社严格按照合同规定的团队日程安排活动;未经()同意,不得变更日程。 ["旅游团参游人员","旅游团多数参游人员","台湾地区品质保障协会","大陆经营大陆居民赴台旅游业务的旅行社","台湾地区接待大陆居民赴台旅游的旅行社"]
根据水电站集中落差方式不同,水电站基本开发方式有()。 ["坝式","引水式","混合式","潮汐"]
轨道衡线 weigh bridge track
堆场 storage yard