【简答题】When we talk about getting online, we mean being connected to the Internet---a giant network of computers that connects people and information all over the world. The Internet has a lot in common with...
【单选题】The Internet allows us to transmit messages across the world in an instant.
【判断题】当使能端E1=1,E’2= E’3=0时,74LS138(3线-8线译码器)处于译码工作状态。
【判断题】发动机机油油耗超标的原因是润滑油漏损。()
【单选题】The Internet allows rural school children about what is happening in the world .
【单选题】The Internet allows rural school children about what is happening in the world.
【判断题】通常标准输入设备指显示屏,标准输出设备指键盘。
【多选题】在下图的左上角有一个小黑正方块,而黑点周围的颜色比较统一,要将此图片修复,下列方法中可行的有
C.
将前景色设置为黑点周围的颜色,使用工具选择属性栏的填充像素,然后使用钢笔进行选取
D.
将前景色设置为黑点周围的颜色,使用矩形选区工具进行选取,然后按下键盘的Ctrl+Delete进行填充