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配置WWW服务器是Linux操作平台的重要工作之一，而Apach是目前应用最为广泛的Web服务器产品之一。在Linux下安装Apachc Web服务，Apache服务程序httod启动时需要读取配置文件httpd.conf，以下是一个hupd.conf配置文件的片断：
## httpd.conf--Apache HTTP server configuration file
### Section 1：Global Environment
ServerType standalone
ServerRoot"/etc/httpd"
Timeout 300
KeepAl ive On
MaxKeepAliveRequests 100
KeepAliveTimeout 15
MaxClient 150
###Section 2: ’Main’server configuration
Port 80
User apache
Group apache
ServerAdmin webmaster@abc.com.cn
ServerName www.abc.com.cn
DocumentRoot"/var/www/html"
UserDir public_html
DirectpryIndex index.html
Alias /jianji"/home/zhang/jianji"
ScriptAlias/cgi-bin/"/var/www/cgi-bin/"
ErrorDocument 404/missing.html
###Section 3:Virtual HostS
NameVirtualHost 192.168.10.101
＜VirtualHost 192.168.10.101＞
ServerAdmin webmaster@abc.com.cn
DocumentRoot/www/htdocs/abc
ServerName markert.abc.com.cn
ErrorLog logs/host.some_domain.com-error_log
CustomLog logs/host.some_domain．com_access log common
＜/VirtualHost＞

httpd.conf文件中“Alias/jianji"/home/zhang/jianji"”一行的含义是什么

答案

参考答案：建立一个虚拟目录“/jianji”，其真实路径是“/home/zhang/jianji”。

解析：Alias参数用于将URL与服务器文件系统中的真实位置进行直接映射(虚拟目录)，一般的文档将在DocumentRoot中进行查询，然而使用Alias定义的路径将直接映射到相应目录下，而不再到DocumentRoot下面进行查询，因此，“Alias/jianji"/home/zhang/jianji"”一行的含义是建立一个虚拟目录“/jianji”，其真实路径是“/home/zhang/jianji”。

判断题

发动机温度过高时应关闭百叶窗。
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单项选择题

She’s cute, no question. Symmetrical features, flawless skin, looks to be 22 years old-entering any meat-market bar, a woman lucky enough to have this face would turn enough heads to stir a breeze. But when Victor Johnston points and clicks, the face on his computer screen changes into a state of superheated, crystallized beauty. "You can see it. It’s just so extraordinary," says Johnston, a professor of biopsychology at New Mexico State University who sounds a little in love with his creation.
The transformation from pretty woman to knee-weakening babe is all the more amazing because the changes wrought by Johnston’s software are, objectively speaking, quite subtle. He created the original face by digitally averaging 16 randomly selected female Caucasian faces. The changing pro-gram then exaggerated the ways in which female faces differ from male faces, creating, in human-beauty-science field, a "hyper-female". The eyes grew a bit larger, the nose narrowed slightly and the lips plumped. These are shifts of just a few millimeters, but experiments in this country and Scotland are suggesting that both males and females find "feminized" versions of averaged faces more beautiful.
Johnston hatched this little movie as part of his ongoing study into why human beings find some people attractive and others homely. He may not have any rock-solid answers yet, but he is far from alone in attempting to apply scientific inquiry to so ambiguous a subject. Around the world, re-searchers are marching into territory formerly staked out by poets and painters to uncover the underpinnings of human attractiveness.
The research results so far are surprising and humbling. Numerous studies indicate that human beauty may not be simply in the eye of the beholder or an arbitrary cultural artifact. It may be ancient and universal, wrought through ages of evolution that rewarded reproductive winners and killed off losers. If beauty is not truth, it may be health and fertility: Halle Berry’s flawless skin may fascinate moviegoers because, at some deep level, it persuades us that she is parasite-free.
Human attractiveness research is a relatively young and certainly contentious field-the allure of hyper—females, for example, is still hotly debated—but those on its front lines agree on one point: We won’t conquer "looks—ism" until we understand its source. As psychologist Nancy Etcoff puts it: "The idea that beauty is unimportant or a cultural construct is the real beauty myth. We have to understand beauty, or we will always be enslaved by it. \

The word "symmetrical" underlined in Paragraph 1 is closest in meaning to ______.

A．proportionate

B．gorgeous

C．splendid

D．unique
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