【简答题】当ContentObserver观察到指定Uri代表的数据发生变化时,就会触发ContentObserver的【】方法。
【单选题】在依据风险产生的行为划分的风险种类中,非个人行为引起的风险被称为( )
【单选题】In urban planning, it is important to take into consideration the ________ influence between the transportation network and other facilities, for example shopping centers and medical centers.
【单选题】In general, _____ is suitable for delivering small quantifies at high pressure.