Which Layer 1 devices can be used to enlarge the area covered by a single LAN segment?（） [" Switch"," Router"," NIC"," hub"," Repeater"," RJ-45 transceiver"]
专业技术人员培养创新能力要注意理论素养的积累，理论素养包括（） ["马列主义","毛泽东思想","邓小平理论",""三个代表"重要思想和科学发展观"]
以即时控制魔术套索工具轨迹的扩大与收缩是键盘上哪组键：（） [" “［”与“］”"," “←”与“→”"," “↑”与“↓”"," page up与page dow"]
同一图片在不同操作平台上是不一样的，但我们可以调整显示器的颜色以适应这种变化，下列说法错误的是：（） [" ImageReady中的“预览”命令使您可以在预览图像时补偿不同平台间的RGB颜色显示差值"," RGB颜色的显示在Photoshop和ImageReady之间是完全相同的"," 调整显示器的颜色显示时并不更改图像中的像素值"," 可以在存储原图像时嵌入颜色配置文件来保证颜色的一致性"]
熔合线
数据库体系结构中包含的三级模式为（）、（）和内模式三种。
