In which two cases would you perform only consistent backup？（） ["You are working on a database where downtime is not tolerated.","You are working on a database where downtime can be tolerated.","You are working on a database that operates in ARCHIVELOG mode.","You are working on a database that operates in NOARCHIVELOG mode.","You are working on a database where all the tablespaces are locally managed.","You are working on a database where control files and redo log files are multiplexed.","You are working on a database where control files and redo log files are not multiplexed."]
公开市场原则
Which two code fragments correctly create and initialize a static array of int elements？（） ["static final int[] a = { 100，200 }；","static final int[] a； static { a=new int[2]； a[0]=100； a[1]=200； }","static final int[] a = new int[2]{ 100，200 }；","static final int[] a； static void init（） { a = new int[3]； a[0]=100； a[1]=200； }"]
调节器从手动转自动时，应（）才能平稳 ["平衡球处于中央","平衡球在一侧","平衡球在2\/3"]
产业结构优化的对象主要有（） ["A.供给结构的优化 ","B.需求结构的优化 ","C.工业结构的优化 ","D.国际投资结构的优化 ","E.国际贸易结构的优化"]
本程序设计界面及运行界面如下：
程序功能是：用户输入一个3位正整数后，按“确定”键，该数字的个位、十位、百位数字分别显示在输出框中。如果输入的数据不在规定范围之内，程序要给出错误提示。
请编写单击“确定”按钮的事件处理程序。
