【简答题】Passage V An astronomy class is given the following facts about stellar evolution. 1. A star’s evolution can be divided into 3 stages: premain sequence (pre-MS), main sequence (MS), and post-main sequ...
【单选题】Given the following code: public class Test { void printValue(int m) { do { System.out.println(&q
A.
Given the following code: public class Test { void printValue(int m) { do { System.out.println("The value is"+m); } while( --m >10 ) } public static void main(String arg[]) { int i=10; Test t= new Test (); t.printValue(i) ; } } Which will be output? A.The value is 8
【多选题】Given the following code fragment: 1)public void create() { 2) Vector myVect; 3) myVect = new Vector() ; 4) } Which of the following statements are true?
A.
The declaration on line 2 does not allocate memory space for the variable myVect
B.
The declaration on line 2 allocates memory space for a reference to a Vector object
C.
The statement on line 2 creates an object of class Vector
D.
The statement on line 3 creates an object of class Vector
E.
The statement on line 3 allocates memory space for an object of class Vector
【单选题】Given the following two tables: TAB1 R1 A A A B B C C D E TAB2 R2 A A B B C C D Which of the following queries returns the following result set? RETVAL E()
A.
SELECT r1 AS retval FROM tab1 INTERSECT SELECT r2 AS retval FROM tab2
B.
SELECT r1 AS retval FROM tab1 EXCEPT SELECT r2 AS retval FROM tab2
C.
SELECT DISTINCT r1 AS retval FROM tab1, tab2 WHERE r1 <> r2
D.
SELECT r1 AS retval FROM tab1 UNION SELECT r2 AS retval FROM tab2
【单选题】A technician is troubleshooting a network connectivity issue. Given the following abbreviated trace route output: Which of the following is MOST likely occurring?()