单选

(51)是面向对象程序设计语言不同于其他语言的主要特点。是否建立了丰富的(52)是衡量一个面向对象程序设计语言成熟与否的一个重要标志。(53)是在类及子类之间自动地共享数据和方法的一种机制。

  • A.消息传递
  • B.继承性
  • C.静态联编
  • D.多态性
参考答案
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(75)is NOT a concept of White Box Testing.

  • A.You should execute all logical decisions on their true and false sides.
  • B.You should execute all independent paths within a module at least once.
  • C.You should execute all loops at their boundary conditions.
  • D.You should execute all interfaces at their boundary conditions.

(74)is encoded with Differential Manchester in the diagram below.

  • A.10110011100
  • B.11001100011
  • C.00111001101
  • D.11000110010

The methods used in Asynchronous Transfer Mode(ATM)are switch technology and(72)is used to describe this mode.

  • A.cell exchange
  • B.message exchange
  • C.information exchange
  • D.packet exchange

(63)

  • A.右递归
  • B.左递归
  • C.直接左递归
  • D.直接右递归

(62)

  • A.归约
  • B.归纳
  • C.推导
  • D.推理

(60)

  • A.LL(1)分析法
  • B.算符优先分析法
  • C.预测分析法
  • D.递归子程序分析法

(61)

  • A.素短语
  • B.短语
  • C.句柄
  • D.直接短语
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