单选

一个对象在收到消息时,要予以响应。不同的对象收到同一消息可以产生完全不同的结果,这一现象叫做(31)。在使用的时候,用户可以发送一个通用的消息,而实现的细节则由(32)自行决定。这样,同一消息就可以调用不同的(33)。

  • A.引用
  • B.多态
  • C.抽象
  • D.类
参考答案
您可能感兴趣的试题

(76)

  • A.see
  • B.visiting
  • C.call
  • D.access

(77)

  • A.immediacy
  • B.indirectly
  • C.direct
  • D.directly

(75)

  • A.communicate
  • B.communications
  • C.correspond
  • D.correspondence

(74)

  • A.communion
  • B.share
  • C.partake
  • D.pool

When you are(71)a home or small office network, it is recommended that you use the Network Setup Wizard in Windows XP Home Edition to enable Internet Connection Sharing. The Network Setup Wizard automatically provides all of the network settings you need to(72)one Internet connection with all the computers in your network.

  • After ICS is enabled, and you make sure that all of your computers can(73)with each other and they have Internet(74)you can use programs such as Internet Explorer and Outlook Express as if they were(75)connected to the Internet service provider(ISP). When
  • A.creating
  • B.reach
  • C.going for
  • D.setting up

(71)

  • A.VLAN
  • B.LANE
  • C.VPN
  • D.IPOA

(72)

  • A.Coaxial cable
  • B.Optical fiber
  • C.Unshielded Twisted-pair Cable
  • D.Shielded Twisted-pair Cable

(70)

  • A.PPP
  • B.PAP
  • C.CHAP
  • D.LCP

(69)

  • A.NAT
  • B.NCP
  • C.DDN
  • D.DNS
¥

订单号:

遇到问题请联系在线客服

订单号:

遇到问题请联系在线客服