下列对文件系统的多级目录结构的描述正确的是_______。A.线性结构 B.树形结构

题型:单项选择题

问题:

下列对文件系统的多级目录结构的描述正确的是_______。

A.线性结构

B.树形结构

C.散列结构

D.双链表结构

考点:计算机等级考试数据库技术计算机三级(数据库技术)9
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( )是建立城市艺术骨架和组织城市空间的重要手段之一,它可以把城市空间组织成一个有序、有韵律的整体。

A.城市绿化

B.城市水面

C.城市制高点

D.城市轴线

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做一个负责任的公民必须做到                             [ ]

A.信守承诺   勇担过错              

B.慎重许诺、坚决履行诺言

C.承认错误并承担错误所造成的后果   

D.自觉承担责任,学会反思自己的责任

题型:单项选择题

Many years ago, when I was fresh out of school and working in Denver, I was driving to my parents’ home in Missouri for Christmas. I stopped at a gas station(加油站) about 50 miles from Oklahoma City, where I was planning to stop and visit a friend. While I was standing inline at the cash register, I said hello to an older couple who were also paying for gas.

I took off, but had gone only a few miles when black smoke poured from the back of my car. I stopped and wondered what I should do. A car pulled up behind me. It was the couple I had spoken to at the gas station. They said they would take me to my friend’s home. We chatted on the way into the city, and when I got out of the car, the husband gave me his business card.

I wrote him and his wife a thank-you note for helping me. Soon afterward, I received a Christmas present from them. Their note that came with it said that helping me had made their holidays meaningful.

Years later, I drove to a meeting in a nearby town in the morning. In late afternoon I returned to my car and found that I’d left the lights on all day, and the battery was dead. Then I noticed that the Friendly Ford dealership—a shop selling cars was right next door. I walked over and found two salesmen in the showroom.

"Just how friendly is Friendly Ford" I asked and explained my trouble. They quickly drove a pickup truck to my car and started it. They would accept no payment, so when I got home, I wrote them a note to say thanks. I received a letter back from one of the salesmen. No one had ever taken the time to write him and say thank you, and it meant a lot, he said.

"Thank you" are two powerful words. They’re easy to say and mean so much.

The author planned to stop () at Oklahoma City.

A.to visit a friend

B.to see his parents

C.to pay at the cash register

D.to have more gas for his car

题型:单项选择题

下面有关民族区域自治制度的相关问题说法错误的是( )

A.民族自治地方自治机关有自主地管理地方财政的自治权

B.如果上级国家机关的决议、命令不适合本民族自治地方的实际情况,自治机关直接可以变通或者停止执行。

C.我国宪法规定,民族自治地方的自治机关依照国家军事制度和当地的实际需要,无须批准,可以组织维护社会治安的公安部队。

D.人民政府的其他组成人员以及自治机关所属工作部门的干部,也要尽量配备实行区域自治的民族和其他少数民族的人员。

题型:单项选择题

垄断的无谓损失

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