题目内容
（请给出正确答案）
A.创建Callable接口的实现类，并实现call()方法，该call()方法将作为线程执行体，并且有返回值
B.创建Callable实现类的实例，使用FutureTask类来包装Callable对象，该FutureTask对象封装了该Callable对象的call()方法的返回值
C.使用FutureTask对象作为Thread对象的target创建并启动新线程
D.调用FutureTask对象的getValue()方法来获得子线程执行结束后的返回值
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Kent says that he introduced automation at his factory because he
A．wanted to make the future of the steel industry more secure.
B．thought that his men were not working hard enough.
C．needed to cut down on the running costs of the company.
D．believed it would encourage team spirit in his workforce.
Kamp says that he introduced automation at his factory because he
A．wanted to make the future of the steel industry more secure.
B．thought that his men were not working hard enough.
C．needed to cut clown on the running costs of the company.
D．believed it would encourage team spirit in his workforce.
A．a callable bond
B．a provisional bond
C．an exchangeable bond
D．a convertible bond
Callable bonds are bonds in which______.
A．the borrower has the right to pay off all or part of the bond before the scheduled maturity date
B．the lender has the right to recall all or part of the bond's principal value before the scheduled maturity date
C．coupon payments can be suspended for a brief period of time
D．the issuer has defaulted
A．higher than that on the noncallable bond
B．lower than that on the noncallable bond
C．the same as that on the noncallable bond
D．that one cannot tell which one of the two bonds should have a higher return
下列能够最好地描述OSI的数据链路层功能的是（）。
A．提供用户和网络的接
B．处理信号通过介质的传输
C．控制报文通过网络的路由选择
D．保证数据正确的顺序和完整性
下列关于记账式国债描述不正确的是()。
A．与凭证式国债相比交易更灵活
B．通过无纸化方式发行与交易
C．不可以记名和挂失
D．交易价格由市场决定
A.抽象类和抽象方法必须通过abstract修饰
B.抽象类不能实例化
C.抽象方法只有方法声明，没有方法实现
D.抽象方法可以通过构造方法实例化
