在Ubuntu Linux中,命令#apt—get install mailx的功能

题型:单项选择题

问题:

在Ubuntu Linux中,命令#apt—get install mailx的功能是()。

A.获取、解包并安装邮件服务器

B.获取、解包并安装邮件客户端

C.获取、解包并安装FTP服务器

D.获取、解包并安装邮件系统

考点:计算机操作系统网络操作系统网络操作系统题库
题型:单项选择题

如图所示,水平地面上放着一个内表面光滑的凹槽,槽两端固定有两轻质弹簧,一弹性小球在两弹簧间往复运动,把槽、小球和弹簧视为一个系统,则在运动过程中(  )

A.系统的动量守恒,机械能不守恒

B.系统的动量守恒,机械能守恒

C.系统的动量一定不守恒,机械能一定不守恒

D.系统的动量一定不守恒,机械能可能守恒

题型:单项选择题

以下可以组成一个生态系统的是(  )

A.一个湖泊中的浮游生物和所有分解者

B.校园里一块草地及草地上所有的生物

C.一个池塘中的所有罗非鱼和分解者

D.一个鱼缸里的所有金鱼

题型:单项选择题
根据短文内容,从下框的A-F选项中选出能概括每一段主题的最佳选项。选项中有一项为多余项。
A. Gift giving proven to be valuable
B. Memories from gift giving
C. Moments and events for gift giving
D. Various functions of gift giving
E. Gift giving as a wasteful practice
F. Gift giving as a two-way social activity
Gift Giving
小题1:                                    
There are many occasions(场合)for giving gifts in modern industrialized societies: birthdays, naming ceremonies, weddings, anniversaries, New Year. It is common to give gifts on many of these celebrations in western cultures. In addition, special events, such as one’s first day of school or graduation from university, often require gift giving.
小题2:                                                     
What is happening when we give gifts? Most important, we are exchanging gifts. If someone gives me a gift for my birthday, I know that I am usually expected to give one on his or her next birthday. A gift builds up or confirms a social obligation(义务).
小题3:                                                     
Gifts tighten personal relationships and provide a means of communication between loved ones. People say that a gift lets the recipient(接受者)know we are thinking of them, and that we want to make the person “feel special.” We want people to feel wanted, to feel part of our social or family group. We give presents to say “I’m sorry.” Sometimes it is difficult for us to find a present that someone will like. Sometimes we give things that we like or would feel comfortable with. In all these cases, the gifts are sending out messages—often very expressive ones.
小题4:                                                     
People tend to talk about presents in a fairly loving way. A woman whose mother had died years ago described the many gifts around her house. These were gifts that her mother had given her over the years: “I appreciate these, and they mean something to me,” the woman said, “because I remember the occasions they were given on, and that they were from my mother, and the relationship we’ve had.” The gifts remain and keep the relationship alive in mind. This woman felt the same way about the gifts she gave to others. She hoped that the recipients would look at her gifts in years to come and remember her.
小题5:                                                      
Emotions (情感) like these suggest that a positive spirit still lies behind gift giving. They prove that the anthropologist Claude Levi-Strauss was wrong to say that modern western gift giving is highly wasteful. Studies in Canada and elsewhere have also shown that this is not the case. Each gift is unique even if so many are given. The emotional benefit for those who exchange gifts is the very reason for the tradition to continue.
题型:单项选择题

患儿男,14个月,足月顺产。因其母发现患儿智力与运动功能落后于同龄儿,散发特殊气味入院。查体:体重8.5kg,身高70cm,头围44cm,皮肤白皙,毛发黄,尿三氯化铁试验阳性。

本病的主要治疗方法是()。

A.抗生素治疗

B.手术治疗

C.饮食治疗

D.加强训练

E.停止母乳喂养

题型:单项选择题

我国一般划分的社会组织是按照( )划分的。

A.组织性质和功能
B.组织目标
C.组织结构
D.组织控制

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