Which command will run myscript and redirect stdout and sterr to /tmp/myoutput？（） A: /myscript >> /tmp/myoutput B: /myscript 2>&1 /tmp/myoutput C: /myscript > /tmp/myoutput 2>&1 D: /myscript > /tmp/myoutput &1>2

利用Command对象的ExecuteNorQuery（）方法执行INSERT.UPDATE或DELETE语句时，返回（） A: True或False B: 1或0 C: 受影响的行数 D: -1

利用Command对象的ExecuteNonQuery()方法执行insert,update或delete 语句时，将返回( ). A: True 或 False B: 1 或 0 C: -1 D: 受影响的行数

运行如下程序后 , 命令窗口（ command windows ）显示的结果为 ...0,-1]; y=max(max(A))

Which two statements describe the process identifier that is used in the command to configure OSPF on a router? (Choose two.) Router(config)# router ospf 1

Suppose I have a data set called DATA and want to extract rows 1 to 10 and columns 5 to 7. What would be the relevant R command? A: DATA[1:10,5:7] B: DATA[5:7,1:10] C: DATA[10:1,7:5] D: DATA[7:5,10:1]

Which of the following is not a feature of Busybox() A: It compresses a large number of programs into a single file. B: It identifies each command with the command line parameter 'argv [1]'. C: It establishes a symbolic link for each command. D: It joins the common parts of multiple commands and keeps only one copy.

如何要执行 sql 语句 delete from t_score where id=1 ，你会使用 command 类的 方法获取结果 。

运行如下程序后, 命令窗口（command windows）显示的结果为( ). A=[13,-56,78; 25,63,-735; 78,25,563; 1,0,-1]; y=max(max(A))

在MATLAB的Editor中输入下列语句:x=&#91;1<br/>3;2 4&#93;;y=norm(x(:,2));z=det();u=diag();v=polyval(u,1);运行后,在Command<br/>Window 中对应y,z,u,v的输出结果为(<br/>) A: 5 -2 [1;4] 5 B: 5 2 [1;2] 3 C: 4 2 [1;2] 3 D: 4 -2 [1;4] 5