激光打印机属于____。
A. 非击打式打印机
B. 热敏式打印机
C. 击打式打印机
D. 针式打印机
在Word中,可以显示页眉和页脚的视图为______。
A. 普通视图
B. 页面视图
C. 大纲视图
D. Web版式视图
下列有关计算机系统软件的作用叙述正确的是____。
A. 方便用户使用计算机
B. 清除病毒,维护计算机的正常运行
C. 开发电子商务系统
D. 解决语音输入
5 Complete the paragraph with the correct form of the words below.chaoticextinguishheroismimmediatenightmaretolltragedyutmostFor a firefighter arriving on the scene of a fire the first few minutes are usually the most (1)________. He has to (2)_________ the fire, he also needs to find out if human lives are in danger. When people are trapped inside a building he must act (3)__________ to prevent (4)________ , or — in the (5)_________ scenario — to keep the death (6)____ to a minimum. Actions like these require the (7)________ degree of (8)________ .