【简答题】二极管的正向接法是 接电源的正极 , 接电源的负极 ; 反向接法则相反。
【判断题】Claire noticed many people who had been waiting hours to buy their tickets.
【单选题】单选题:国家安全机关的主要任务是 ( ) 。
【单选题】在罗马货民区创办第一所幼儿学校——“儿童之家”, 创立以感官为基础的幼儿教育体系的教育家是 ( ) 。
【简答题】为了突破文本检索方式的弊端,必须从媒体自身的内容入手,以媒体所包含的内容信息作为媒体的索引,即基于()的检索。
【简答题】二极管的正向接法是 ,负极接电源的负极;反向接法相反。
【简答题】Many people who had seen the film were afraid to go to the forest as they remembered the scenes________ people were eaten by the tiger. A.in which B.by which C.which D.that