1.public class test&e

下面程序输出的结果为

#include"iostream.h"

class A

{

public：

A( ){cout＜＜"CLASS A"＜＜endl；}

～A( ){}

}；

class B：public A

{

public：

B( ){cout＜＜"CLASS B"＜＜endl；}

～B( ){}

}；

void main( )

{

A*p；

p=new B；

B *q；

q=new B；

}

A．CLASS A CLASS B

B．CLASS A CLASS B CLASS B

C．CLASS A CLASS B CLASS A CLASS B

D．CLASS A CLASS B CLASS B CLASS B

A. Class A

B. Class B

C. Class C

D. Class D

1.public class GC{2.private Objec to；3.private void doSomethingElse（Object obj）{o=obj；}4.public void doSomething（）{5.Object o=new Object（）；6.doSomethingElse（o）；7.o=new Object（）；8.doSomethingElse（null）；9.o=null；10.}11.}When the doSomething method is called，after which line does the Object created in line 5 become available for garbage collection？（）

A.Line5

B.Line6

C.Line7

D.Line8

E.Line9

F.Line10

Which statement is NOT true concerning the stowage of class 1 explosives ________．

A.Class 1.1 explosives may be stowed with class 9 dangerous substances

B.Class 1.4 explosives must be“separated from”a stow of class 5.1 oxidizing materials

C.Class 1.4 explosives may not be stowed in the same hold with class 6.1 poisons

D.Class 1.4 explosives must be“separated from”a stow of class 8 corrosive materials

下面程序输出的结果为( )。 #inClUde”iostream.h” Class A {public： A(){cout＜＜“CLASS A”＜＜endl；} ～A()＜)}； class B：public A {public： B(){cout＜＜”CLASSB”＜＜endl；} ～B(){}}； void main() {A*p； p＝new B； B *q； q＝new B；}

A．CLASS A CLASS B

B．CLASS A CLASS B CLASS B

C．CLASS A ClASS B

D．CLASS A CLASS B CLASS A CLASS B CLASS B CLASS B

Class a = new Class(); Class b = new Class();

if(a == b) returns true or false, why?

下面程序输出的结果为 #include"iostream.h” class A ｛ public: A()｛cout＜＜"CLASSA"＜＜endl;｝ ～A() ｛｝ ｝; class B:public A ｛ public: B()｛cout＜＜"CLASS B"＜＜endl;｝ ～B()｛｝ ｝; void main() ｛ A*p; p＝new B;

A．CLASS A CLASS B CLASS B CLASS B

B．CLASS A CLASS B CLASS A CLASS B

C．CLASS A CLASS B CLASS B

D．CLASS A CLASS B

下面程序输出的结果为 #include"iostream．h" class A { public： A(){cout＜＜"CLASSA"＜＜endl；} ～A() {} }; class B：public A { public： B(){cout＜＜"CLASSB"＜＜endl；} ～B() {} }； void main() { A * p； p=new B； B *q； q=new B； }

A．CLASS A CLASS B

B．CLASS A CLASS B CLASS B

C．CLASS A CLASS B CLASS A CLASS B

D．CLASS A CLASS B CLASS B CLASS B

对于下面( )类定义,可以通过“newJ_Class()”生成类J_Class的实例对象。

A、publicclassJ_Class{

publicJ_Class(void){}

}

B、publicclassJ_Class{}

C、publicclassJ_Class{

publicJ_Class(Strings){}

}

D、publicclassJ_Class{

publicvoidJ_Class(){}

publicJ_Class(Strings){}