爱立信常考的笔试真题

新高考网

  选择题


  1:异步复接二次群一帧中的插入标志码有

  a.4 bit

  b.6~7 bit

  c.12 bit

  d.最多28 bit

  2:条件转移指令jnbe产生转移的条件是

  a.cf=0 and zf=0

  b.cf=0 and zf=1

  c.cf=1 and zf=0

  d.cf=1 and zf=1

  2cm零次群速率为。

  a.8kb/s

  b.16kb/s

  c.32kb/s

  d.64kb/s

  3:array dw 6, 9, $+4, 10h, 1,$+4

  ┇

  mov ax, array+4

  设变量array的偏移量是0084h,上述指令执行后ax中的内容是

  a.0009

  b.008ch

  c.0090h

  d.0010h

  4:表示过程定义结束的伪指令是

  a.endp

  b.ends

  c.end

  d.endm

  5:数字光纤传输系统属于

  a.基带传输

  b.频带传输

  c.数字数据传输

  d.无线传输

  7:设非压缩bcd码al=09h,bl=04h在执行sub al,bl指令后应选的校正指令是

  a.daa

  b.aas

  8.C++类笔试题

  求输出的结果

  #include

  using namespace std;

  class base

  {

  public:

  void func(const char* str){cout << "base: " << str << endl;}

  virtual void func(int num){cout << "base: " << num << endl;}

  };

  class derived : public base

  {

  public:

  void func(const char* str){cout << "derived: " << str << endl;}

  void func(int num){cout << "derived: " << num << endl;}

  void func(){cout << "the function is in derived!" << endl;}

  };

  int main()

  {

  base *pb;

  derived objd;

  pb = objd;

  pb->func(11);

  pb->func("hello");

  // pb->func();

  getchar();

  return 0;

  }

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