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【判断题】
.系统软件是用来控制计算机运行,管理计算机的各种资源,并为应用软件提供支持和服务的一类软件A.
正确
B.
错误
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【简答题】阅读理解 Jane Good all first made friends with a chimp (黑猩猩) when she was one year old. On her first birthday her mother carried her to the zoo near her home and bought her a toy chimp. She loved her furr...
【简答题】下列结论中正确的序号是（将所有正确的序号都填上）______ ①正弦函数y=sinx图象的一个对称中心是（π，0）； ②直线x=-π不是余弦函数y=cosx图象的一条对称轴方程； ③正弦函数y=sinx的对称轴方程是x=kπ- π 2 ，k∈Z； ④正切函数y=tanx的对称中心是点M（kπ，0），k∈Z．
【简答题】阅读理解。 Once upon a time, there lived a rich man. He had a servant (仆人). He and the servant loved wine (酒) and good food very much. Each time the rich man left his home, the servant would drink the wine...
【简答题】阅读理解。 Once upon a time, there lived a rich man. He had a servant (仆人). He and the servant loved wine and good food very much.. Each time the rich man left his home, the servant would drink the wine an...
【单选题】 要把屏幕内容复制到剪贴板中(截屏),可按( )。
A.
"Alt+PrintScreen"
B.
"Shift+PrintScreen"
C.
"PrintScreen"
D.
"Ctrl+PrintScreen"
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