下列选项中，循环会无限执行的是______。 A: int i = 1 ; while ( i < 10) System .out .print( “ ” + i) ; B: for( int i = 1 ; i < 10 ;i ++) System .out .print( “ ” + i); C: for( int i = 10 ; i > 0 ;i --) System .out .print( “ ” + i); D: int i = 1 ; while (true) { System .out .print( “ ” + i); i ++ ; if ( i > 5) break ;

请看下面的程序代码,当 n 为( )值时,程序段将输出字符串 second。 [br][/br] switch(n) { [br][/br] case 0: System .out .println(“first”); [br][/br] case 1: [br][/br] case 2: System .out .println(“second”); break; [br][/br] default: System .out .println(“end”); [br][/br] }(2.0) A: 0 B: 1 C: 2 D: 以上都可以

下列程序的运行结果是（）。 public class Test public static void main ( String [ ] args ) int count = 0 for( int i = 1 i < 5 i = 2) for( int j = 1 j< = 10 j = 3) count System .out .print (count ) _

New students spend hours in the library, trying to（）the system of arranging the books. A: work out B: cross out C: set out D: put out

The command wc –l some_file will print out the number of:

10. A control system ought to both point out the problem and specify the solution.

The role of the ______ branch of government is to carry out the political system’s policies, laws or directives.

5. In order to find out more information about this alarm system, one can _______.

The ALU tells the rest of the computer system how to carry out a program's instructions.

下列各语句输出结果为True的是（ ）。 A: print(7<2) B: print(5>0) C: print((1>2)and(2>1)) D: print(2==0)