在顶层窗口root中创建一个滑动条值为0到200的Scale控件,下列正确的是?
A: Scale(root,from =0,to=200)
B: Scale(root,from_=0,to=200)
C: scale(root,from_=0,to=200)
D: scale(root,from =0,to=200)
A: Scale(root,from =0,to=200)
B: Scale(root,from_=0,to=200)
C: scale(root,from_=0,to=200)
D: scale(root,from =0,to=200)
举一反三
- root组群的GID是0。
- 【单选题】判断当前账户是否为root账户,可以使用如下()命令。 A. if [ whoami = root ] B. if [[ whoami == root ]] C. if [ `who` = "root" ] D. if [ $UID -ne 0 ]
- 超级用户root的UID为0
- 以下程序代码的输出结果为( )$conn = mysqli_connect('localhost','root','root','test');$result = mysqli_query($conn,'select id,name,sex from user where id=1');$data = mysqli_fetch_array($result);echo $data[0]; A: 1 B: 2 C: 0 D: 空值
- A dynamic welfare gain resulting from the formation of the European Union would be: A: Trade diversion B: Trade craetion C: Diseconomies of scale D: Economies of scale