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【简答题】
阅读下列短文，根据短文内容，选择正确答案。 Dear Sally, When you go to see your brother, you can take some things to him: his math book, which you borrowed last week, a baseball, notebook, CDs and video cassette. You both can play baseball tomorrow afternoon. The CDs are needed listening by your brother. And you will enjoy the VCD together. The math book is on the dresser. The baseball is under the bed. The CDs are in the drawer. The video cassette is behind the computer. I have put them away. OK? Have a good time! Baby! Mum 1.You will take ______ things to your brother when you go to see him. A. five B. same C. three 2.The math book is from ______. A. mother B. brother C. Sally 3. Which of the followings are not taken with you? A. CDs B. basketball C. a notebook 4. Why will you take a VCD? A. To give it back to my brother. B. To watch it with my brother. C. To sell it to my brother. 5. Where is the video cassette? A. It's on the computer. B. It's in the drawer. C. It's behind the computer.
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【多选题】在阿里巴巴国际站上供应商删除子账号将给公司带来( )影响。
A.
若已开通外贸邮，该账号对应的外贸邮会彻底删除，没有记录且邮件无法找回 。
B.
TradeManage无法登陆，账号无法找回。
C.
一旦删除就无法恢复。
D.
该账号拥有的RFQ、询盘、产品、人脉名片和客户将直接转移到管理员名下。
【单选题】已知有如下定义: package cn.edu.ncu.chenyi; public interface Runnable{ public void run(); } package cn.edu.ncu.chenyi; public abstract class Animal implements Runnable{ public void run(); } 关于上述两个代码说法正确的是?
A.
Animal编译失败，因为Animal类实现接口，不能定义为抽象类
B.
Animal编译失败，因为Animal类实现接口Runnable,方法run的方法不是抽象方法，方法体不能为空；
C.
Animal编译失败，需要在方法run中增加修饰符abstract才能修改正确，形如： package cn.edu.ncu.chenyi; public abstract class Animal implements Runnable{ public abstract void run(); }
D.
Animal编译成功，代码正确；
E.
以上说法均不正确
【单选题】package foo； public class Outer { public static class Inner { } } Which statement is true？（）
A.
Compilation fails.
B.
An instance of the Inner class can be constructed with “new Outer.Inner（）”.
C.
An instance of the Inner class cannot be constructed outside of package foo.
D.
An instance of the Inner class can be constructed only from within the Outer class.
E.
From within the package foo， and instance of the Inner class can be constructed with “new Inner（）”.
【单选题】package foo； public class Outer （ public static class Inner （ ） ） Which statement is true？ （）
A.
An instance of the Inner class can be constructed with “new Outer.Inner （）”
B.
An instance of the inner class cannot be constructed outside of package foo.
C.
An instance of the inner class can only be constructed from within the outer class.
D.
From within the package bar， an instance of the inner class can be constructed with “new inner（）”
【简答题】下列哪一项不能用来在html文件中标记PHP程序代码段?A.
< /> B. ? C. ?> D.
【多选题】在阿里巴巴国际站上供应商删除子账号将给公司带来( )影响。
A.
若已开通外贸邮，该账号对应的外贸邮会彻底删除，没有记录且邮件无法找回 。
B.
TradeManage无法登陆，账号无法找回。
C.
一旦删除就无法恢复。
D.
该账号拥有的RFQ、询盘、产品、人脉名片和客户将直接转移到管理员名义下。
【单选题】问以下哪个类的定义是合法的? 有接口定义: package business; interface Info { public void show(); }
A.
package impl; import business.*; class A extends Info { }
B.
package impl; import business.*; class A implements Info{ public void show(){ } }
C.
package business; import business.*; class A implements Info{ public void show(){ } }
D.
package business; import business.*; class A implements Info{ void show(){ } }
【简答题】下面的Java源文件代码片断正确的是______。 A．package testpackage； public class Test{//do something…} B．import java.io.*； package testpackage； public class Test{//do something…} C．import java.io.*； class Person{//do so...
【单选题】波长为 l 的单色平行光垂直入射到一狭缝上,若第一级暗纹的位置对应的衍射角为 j = ± p / 6 ,则缝宽的大小为
A.
l / 2 ．
B.
l ．
C.
2 l ．
D.
3 l ．
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