【单选题】固定铰支座A的支座反力通常用( ) 表示
【单选题】When westerners go out to dinners, they usually pay for the bill with each other.
【单选题】图3-7所示为液压传动原理图,A缸向左慢进时电磁阀YA1、YA2的工作状态是( )。
【单选题】As for using toilets, Westerners usually sit, while Asians commonly ______.
【单选题】Westerners usually enjoy individual _________ and eat at square tables.
【单选题】、根据计算结果是否大于1来判断固定资产投资方案是否可行的指标是( )
【单选题】早、中、晚三餐的餐次比一般为 ( )为宜
【单选题】When meeting someone for the first time, westerners usually go for a ______.