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问题 问答题

某微机的寻址范围为64KB，其存储器选择器信号为M，接有8片8KB的存储器，试完成下列问题。

若发现译码器中的地址线A13与CPU断线，并搭接到低电平，问后果如何

答案

参考答案：若发现A13与CPU断线，并搭接到低电平的故障，则

信号均不可能输出0，故第2、4、6、8片RAM始终不被选中。

选择题

 --- The girl doesn’t like playing _______football .

--- That’s true, but she plays ______ piano well.

A．the, /

B．/, the

C．a, the

D．the, a
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填空题

Questions 9-13


·You will hear five people talking about "Whether They Write for Themselves or for Their Readers ".
·For questions 9 to 13, choose from the list A to F what each speaker says.
·Use the letters only once. There is one extra letters which you do not need to use.
  • A. It all depends on the type of writing.
  • B. I always write for myself and never care about the readers.
  • C. I definitely write for myself but I try not to cause unnecessary offences.
  • D. I actually write both for myself and for my readers.
  • E. I have no idea at all for whom I write.
  • F. I write mostly for myself and hope for any readership.
    Speaker 1 (/9 )
    Speaker 2 (/10 )
    Speaker 3 (/11 )
    Speaker 4 (/12 )
    Speaker 5 (/13 )
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