The DD schedule shows_______. ( ) A: interest rate and output pairs for which aggregate demand equals aggregate output. B: exchange rate and output pairs for which aggregate demand equals aggregate output.2 C: interest rate and output pairs for which aggregate supply equals aggregate output. D: exchange rate and output pairs for which aggregate demand is greater than aggregate output.

下面程序的输出为( )。 public class Test { public static void main (String args[]) { int x，y； x=1； y=2； System.out.println("The output is"+x+y)； } } A: The output is xy B: The output is 3 C: The output is 12 D: The output is x=1 y=2

采用数字示波器的通道2测量函数信号发生器发出的正弦信号，两个仪器接口之间应选择（ ）进行连接。 A: TTL/CMOS OUTPUT和1 B: TTL/CMOS OUTPUT和2 C: OUTPUT 50Ω和1 D: OUTPUT 50Ω和2

要从磁盘上新建一个名为"c:\t1.txt"的顺序文件,如下语句中正确的是(). A: F="c:\t1.txt" Open "F" For Append As B: 2 C: F="c:\t1.txt" Open "F" For Output As D: 2 E: Open c:\t1.txt For Output As F: 2 G: Open "c:\t1.txt" For Output As H: 2

设有语句Open file.txt For Output As #2，以下叙述错误的是（）。

对语句Open“c:Test.txt”For Output As #2,以下错误叙述是()

已知有<;input type=”range” name=”test” id=”myRange” min=”0” max=”100”>;，以下哪种输出标签可以与之相关联？（ ）。 A: <;output name=”myOutput” for=”test”>;<;/output>; B: <;output name=”myOutput” for=”myRange”>;<;/output>; C: <;output name=”myOutput” for=”range”>;<;/output>; D: <;output name=”myOutput” for=”input”>;<;/output>;

为了读取数据，需要打开顺序文件“D:\data5.txt”，以下正确的命令是。 A: Open "E:\UserData.txt" For Input As B: 2 C: Open "E:\UserData.txt" For Output As D: 2 E: Open E:\UserData.txt For Output As F: 2 G: Open E:\UserData.txt For Input As H: 1

A NAND gate has an output that is opposite the output of an AND gate

pinMode(led, OUTPUT)语句中的OUTPUT表示 （）。