更多"棒有S棒、O棒、I棒等种类。"的相关试题:
[单项选择]I'm afraid this painting is not by Picasso. It's only a copy and so it's______.
A. priceless
B. invaluable
C. unworthy
D. worthless
[单项选择]A: It's already 9 o'clock. I'm afraid I have to go. Thank you for the wonderful dinner.B: ______
[单项选择]AT89S52单片机的串行I/O是（）。
A. 单工
B. 半双工
C. 半单工
D. 全双工
[简答题] 请回答K2Cr2O7标定Na2S2O3时实验中的有关问题。 Cr2O72-氧化I－反应为何要加酸，并加盖在暗处放置5min，而用Na2S2O3滴定前又要加蒸馏水稀释？若到达终点后蓝色又很快出现说明什么？应如何处理？
[单项选择]S7-200系列PLC中下列各I点中可以用来产生I/O中断的是（）。
A. I0.3
B. I1.0
C. I1.7
D. I0.5
[单项选择]Guest: Oh ,it's ten o'clock I'd better go now. Host:（）.
A. OK. Please walk slowly.
B. Why do you want to go now Don't you want to stay
C. Won't you stay for another cup of coffee
D. Yeah, it's really late. Why not immediately
[判断题]AT89S51单片机共有4个8位的并行I/O口，其中P2口既可用作地址/数据口，又可用作一般的I/O口。
[填空题]AT89S51单片机共有4个8位的并行I/O口，其中既可用作地址/数据口，又可用作一般的I/O口的是（）。
[判断题]PLC的输入和输出量有开关量和模拟量两种。开关量I/O用最大I/O点数表示，模拟量I/O点数用最大I/O通道数表示。
[单项选择]Which of the following describes the I. O. C. 's attitude towards the environmentalists' protests
A. Trying to commit themselves.
B. Showing indifference and contempt.
C. Arguing for practical difficulties.
D. Negotiating for gradual changes.
[填空题]I/O接口电路数据传送方式有：（）、中断、DMA、I/O通道和I/O处理机方式。
[单项选择]Ann: Oh, it's ten o'clock. I'd better go home now.Bill: ______
[单项选择]Personally I think he's ______ the most original of all the contemporary fashion designers.
A. in all
B. by far
C. for all
D. at best
[单项选择]执行程序段“G90 G02 X42.0 Y52.O I—0.O J30.O F150.O”时，被加工的圆弧半径是（）。
A. R50.0
B. R40.0
C. R30.0
D. R52.0
[单项选择]程序段如下； s=0 For I=5 to -1 step -2 S=s+I Next I Print I 语句S=S+I执行的次数和最后I的值分别为( )。
A. 3,-1
B. 4,-1
C. 4,-3
D. 0, 5
[填空题]通过CPU对I/O状态的测试，只有I/O已准备好时才能进行I/O传送，这种传送方式称为（）
[单项选择]执行以下循环语句后，正确的结果是( ) for(s=0，i=0；i＜5；i=i+2)s=s+i；
A. s=0
B. s=2
C. s=6
D. s=12
