下面程序段的输出结果为 package test； public class C_爱下问搜题

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问题单项选择题

下面程序段的输出结果为
package test；
public class Class A

int x=20；
static int y=6；
public static void main(String args[])

Class B b=new Class B();
b.go(10)；
System.out.println("x"+b.x)；

class ClassB

int x；
void go(int y)

ClassA a=new ClassA();
x=a.y；

A．x=10

B．x-20

C．x=6

D．编译不通过

答案

参考答案：C

解析：本题考查在Java中静态变量(类变量)的用法。在题目程序段中生成了一个static int y=6类变量，在ClassA中调用的b.go＜(10)，只不过是在ClassB中的一个局部变量，通过调用ClassB中的go方法可以生成一个ClassA对象，并给这个新生成的对象赋以ClassA中的类变量y的值。从main()方法作为入口执行程序，首先生成一个ClassB的对象，然后b.go(10)会调用ClassA，会给x和y赋值，x=a.y后，x值为6，再返回去执行System.out.println("x="+b.x)语句，输出为x=6，可见，正确答案为逸项C。

完形填空

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A．friendships

B．championships

A．appreciated

A．consideration

C．preparation

D．instruction

C．performance

D．improvement

D．disadvantages

单项选择题

下列哪项不是血栓前状态（）

A.凝血因子含量降低

B.抗凝蛋白含量降低

C.纤溶成分含量降低

D.血管内皮细胞受损

E.血小板和白细胞被激活