x, y, and z are positive integers. Which of the following li

题目
单选题
x, y, and z are positive integers. Which of the following lists all the possible ways for x + y + z to be an odd number?I. One of the numbers is odd.II. Two of the numbers are odd.III. Three of the numbers are odd.
A

I

B

I and II

C

I and III

D

II and III

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相似问题和答案

第1题:

In the following statements about functional dependency, which one is incorrect?

A.If X→Y and Y→Z, then X→Z.

B.If X→Y and, then X→Y'.

C.If X→Y and, then X'→Y.

D.If, then X→X'.


正确答案:C

第2题:

计算z的值,当x大于等于y时,z=x;否则z=y。下列语句错误的是( )

A.If x>=y Then z=x:z=y

B.If x>=y Then z=x Else z=y

C.z=y:If x>=y Then z=x

D.If x<y Then z=y Else z=x


正确答案:A

第3题:

下列哪些代码段是正确的?()

A. X x=new X();

Y y=new Y();

Z z=new Z();

y=(Y)x;

B. X x=new X();

Y y=new Y();

Z z=new Z();

x=(X)y;

C. X x=new X();

Y y=new Y();

Z z=new Z();

Z=(Z)x;

D. X x=new X();

Y y=new Y();

Z z=new Z();

W w=(W)x;


答案:D

解析:对象的强制类型转换的格式要求:"W w=(W)x;",只有D项符合

第4题:

Which statements, when inserted at the indicated position in the following code, will cause a runtime exception when attempting to run the program?()   class A {}   class B extends A {}   class C extends A {}   public class Q3ae4 {   public static void main(String args[]) {   A x = new A();   B y = new B();   C z = new C();   // insert statement here   }   } 

  • A、x = y;
  • B、z = x;
  • C、y = (B) x;
  • D、z = (C) y;
  • E、y = (A) y;

正确答案:C

第5题:

计算z的值,当x大于y时,z=x;否则z=y。下列语句错误的是

A.If x>=y Then z=x:z=y

B.If x>=y Then z=x Else z=y

C.z=y:If x>=y Then z=x

D.If x<=y Then z=y Else z=x


正确答案:A
解析:选项A中的语句行有两条语句,执行If语句后,执行z=y语句,所以不管x是否大于y,最终x的值都等于y。

第6题:

下列函数定义不正确的是 ( )

A.int max { int x y,z; z=x>y? x: y }

B.int max(x,y) int x,y; { int z; z=x>y? x:y; return(z) }

C.int max(x,y) { int x,y z; z=x>y? x: y; return(z); }

D.int max( ) {}


正确答案:C

第7题:

计算z的值,当x大于y时,z=x;否则z=y。下列语句错误的是( )

A. If x>=y Then z=x : z=y

B If x>=y Then z=x Else z=y

C. z=y : If x>=y Then z=x

D. If x<=y Then z=y Else z=x


正确答案:D

第8题:

In the following statements about functional dependency, which one is incorrect?

A.Ifthen X→X'.

B.If X→Y andthen X→Y'.

C.If X→Y andthen X'→Y.

D.If X→Y and Y→Z, then X→Z.


正确答案:C

第9题:

Which of the following shows the proper pronunciation of "whose" in the sentence "'In America, Li stayed in a family whose landlady could help him with his English"?

A./hus/
B./huz/
C./hu:s/
D./hu:z/

答案:D
解析:
考查单词的重读。whose在这个定语从句中是关系代词,起连接作用,而且在从句中作定语,需要重读,发长音,因此D项正确。

第10题:

表示关系X<=Y<=Z的JAVA语言表达式为()。

  • A、(X<=Y)&&(Y<=Z)
  • B、(X<=Y)AND(Y<=Z)
  • C、(X<=Y<=Z)
  • D、(X<=Y)&(Y<=Z)

正确答案:A

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