在注释//Start For loop 处要插入哪段代码可以实现根据变量i的值定位访问数组ia[]的所有元素。public class Lin{public void amethod(){int ia[] = new int[4];//Start For loop{ ia[i]=i;System.out.println(ia[i]);}}}

A . A.拨电话号码 B . B.等待对方传真信号 C . C.拨地区代码 D . D.检查传真接收方式

A . Information about port roles is sent to all switches. B . RSTPs that are based on Cisco products require no additional configuration. C . Features such as UplinkFast and BackboneFast are compatible with RSTP. D . An RSTP that is based on Cisco products generally performs better than the Cisco proprietary 802.1D enhancements.

A . Features such as UplinkFast and BackboneFast are compatible with RSTP. B . An RSTP that is based on Cisco products generally performs better than the Cisco proprietary 802.1D enhancements. C . Cisco proprietary enhancements are not transparent. D . Information about port roles is sent to all switches. E . RSTPs that are based on Cisco products require no additional configuration.

A . 正确 B . 错误

A . renaming the control files B . dropping a user in your database C . enabling or disabling redo log archiving D . dropping a tablespace in your database E . re-creating the control files， after you lost all the control files in your database

A . normal B . ordinary C . average D . regular

A . 脚注 B . 尾注 C . 批注 D . 题注

A . which I would like you to have. B . that values his new ideas. C . which is the Mark 2 project. D . that the process can be made simpler.

A .  Assume the system was stopped by a failure. B .  Ensure the hostname parameters is set correctly. C .  Assume the system was stopped by a graceful shutdown. D .  Mount all volumes and file systems before running the application.

A . temp files B . online data files C . offline data files D . read only data file

A．Good mothering. B．He must know 1,000 words to make sentences at three. C．Mothers must be sensitive to children"s non-verbal signals. D．Children must start to learn a language very early.

是 否

程序运行结果如下：(注：由于时间间隔为随机数，所以，运行结果的顺序不惟一) a Start b Start c Start b Loop a Loop b Loop b End c Loop a Loop a End c Loop c End 注意：请勿改动main()主方法和其他已有语句内容，仅在下划线处填入适当的语句。 public class ex2_2 implements Runnable { static char flag2_2 = 'a'; public static void main(String[] arg) { ex2_2 obj2_2 = new ex2_2(); Thread thread2_2 = new Thread(obi2_2); thread2_2.start(); thread2_2 = new Thread(obj2_2); thread2 2.start(); thread2_2 = new Thread(obi2_2); thread2_2, start (); } public void run() { char myflag2_2; synchronized(this) { _________________; } System.out.println(myflag2_2 +" Start"); for(int i=0; i＜2; i++) { try { Thread.sleep(rand(500,2000)); System.out.println(myflag2_2 +" Loop"); } catch(InterruptedException ie) { System.out.println(ie); } } System.out.println(myflag2_2 +" End"); } final private int rand(int low, int high) return(_________________); } }

A．completed B．complete C．have been completed D．had been completed

是 否

A．// this is a comment B．// this is a comment // C．/* this is a comment */ D．' this is a comment