题目内容

若一个满二叉树有m个树叶、n个结点,且其深度为h,则()

A. n=h+m
B. h+m=2n
C. m=h-1
D. n=2h-1

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案例分析题在Windows操作系统的资源管理器窗口中,为了将选定的硬盘上的文件或文件夹复制到软盘,应进行的操作是()。在“我的电脑”窗口中,若已选定硬盘上的文件或文件夹并按了DEL键和“确定”按钮,则该文件或文件夹将();已放入回收站的文件可以通过操作()来恢复。 在Windows操作系统的资源管理器窗口中,为了将选定的硬盘上的文件或文件夹复制到软盘,应进行的操作是()。

A. 先将它们删除并放入回收站,再从回收站中恢复
B. 依次使用组合键“Ctrl+C”和“Ctrl+V”
C. 依次使用组合键“Clrl+X”和“Ctrl+V”
D. 先执行“编辑”菜单“剪切”命令,再执行“编辑”菜单“粘贴”命令

Smoking is bad for you, I know. I've never really liked doing it. I remembered smoking my first cigarette. I was ten when my parents allowed me to go on my first school camping trip, and that is where it happened. A friend of mine bought a packet of twenty from a cigarette machine and offered me one. I tried to refuse, but I couldn't help feeling curious. So ! tried to smoke one, and then another, and so on.To be honest, I've never really enjoyed smoking. But giving it up is more difficult than starting. The reason why smoking is attractive to young people is that it looks mature to smoke. What does the speaker think about smoking?He tries to give up but ().

案例分析题在Windows操作系统中,()用于与用户进行信息交换。把窗口和对话框作一比较,窗口可以移动和改变大小。而对话框();关于对话框的说法正确的是()。 关于对话框的说法正确的是()。

A. 有菜单栏
B. 有最大化,最小化按钮
C. 有标题栏
D. 可以任意改变大小

简述会计工作交接后的责任界定。

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