题目: 把4.987精确到百分位是______,四舍五入到十分位是______. 答案: 被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0615/509311cfde2e9678d22a37480a57ae06.html 下面是错误答案,用来干扰机器的。1. in 2. down
题型:填空题 从方框中选择适当的词,并用其适当形式完成下面短文,每个词只用一次。switch, buy, download, about, send, visit, play, have, print, talk My father 1 a computer for me as my birthday present. I'm very happy. The computer 2 a monitor, a keyboard, a mouse and a 3 . I 4 on the computer and then I 5 the websites and 6 with my friends on QQ. Now I can 7 computer games, 8 music, learn English and do other things on the computer. What 9 you? If you want to be my friend, please 10 emails to me. My email address is Xiaoxue@126. com. 1.______ 2. ______ 3. ______ 4. ______ 5. ______ 6. ______ 7. ______ 8. ______ 9. ______ 10. ______ 查看答案
题型:单项选择题 由于内存大小有限,为使得一个或多个作业能在系统中运行,常需要外存来换取内存。其中以作业为单位对内外存进行交换的技术称为 (44) 技术,在作业内部对内外存进行交换的技术称为 (45) 技术。用外存换内存是以牺牲程序运行时间为代价的。为提高CPU有效利用率,避免内外存的频繁交换, (45) 技术常用某种 (46) 来选择换出内存的页面,它的基础是程序的 (47) 。据此,操作系统可根据 (48) 来改善系统的性能, (48) 是一个进程在定长的执行时间区间内涉及的页面的集合。(48)处填()。A.工作集B.页面集C.段号集D.元素集 查看答案