第9题: [单项选择]The use of sinking and dispersing chemical agents for removal of surface oil is(). A. the most common method used in the United States B. too expensive for common use C. generally safe to sea life D. authorized only with prior approval of the Federal On-Scene Coordinator 参考答案:D
第33题: [单项选择]Window是显示屏上独立的本机窗口,它独立于其他容器,Window的两种形式是( )。 A. Panel和Frame B. LayoutManager和Container C. Frame和Dialog D. Container和Component 参考答案:C 答案解析:[解析] Window是java.awt.Window的对象。Window是显示屏上独立的本机窗口,它独立于其他容器。Window有两种形式:Frame(框架)和Dialog(对话框)。Frame和D