7: 执行DEC指令除对于SF、ZF有影响外,还要影响的标志位是( )。 A: AF,PF,CF B: OF,AF,CF C: OF,PF,CF D: OF,AF,PF ...
3: CPU在执行IN AL,DX指令时,DX的内容输出到( )。 A: 地址总线 B: 数据总线 C: 存储器 D: 寄存器 ...
20: LPC1768微控制器的串口通信中时钟频率是波特率的多少倍:( ) A: 8倍 B: 16倍 C: 32倍 D: 64倍 ...
9: LPC1768微控制器的P4.28引脚一共有几种功能:( ) A: 1种 B: 2种 C: 3种 D: 4种 ...
9: — Paul, _______? — Oh, that’s my father! And beside him, my mother. A: what is the person over there B: who’s talking over there C: what are they doing D: which is that ...
6: — That’s a beautiful dress you have on! — ____________________ A: Oh, thanks. I got it yesterday. B: Sorry, it’s too cheap. C: You can have it. D: See you later. ...
17: — I really don’t know how to thank you enough. — ____________________ A: No problem. B: Think nothing of C: Not at all. D: It doesn’t matter. ...
29: —We ordered 20 boxes of your products, but we have only got 19. —___________________ A: You do not have to B: It does not matter. C: Sorry, we will send another tomorrow. D: Nothing serious. ...
18: You'd better ______ in bed. It's bad for your eyes. A: not to read B: not read C: don't read D: read ...
20: 分组码用(n,k)标记,n表示(),k表示信息码元数 A: 码字 B: 码元 C: 误码 D: 码长 ...