Endless combinations of HTTP GET (URL-based)parameters are useful for the crawler to get unique content.

"be based on" = "be based upon".( )

在CSS中下列哪一项不可以设置“列表样式图像”?() A: list-style:url(图像URL) B: list-style-image:url(图像URL) C: background-image:url(图像URL) D: image:url(图像URL)

【单选题】以下()方法可以获取指定的URL位置的图象。 A. showDocument(URL url) B. getAudioClip(URL url) C. getImage(URL url) D. showStatus(String str)

链接基本语法是（） A: <;a goto="URL">; ... <;/a>; B: <;a="URL">; ... <;/a>; C: <;a link="URL">; ... <;/a>; D: <;a href="URL">; ... <;/a>;

【多选题】下列关于urllib设置请求头的正确代码是() A. request = urllib.request.urlopen (url=url,headers=headers) B. request = urllib.request.Request(url=url,headers=headers) C. urllib.request.Request.setHeader(url=url,headers=headers) D. urllib.request.setHeader(url=url,headers=headers)

The two types of social e-commerce are , . A: based on social platforms such as forums and communities B: based on weak relationships C: based on WeChat and other self-media D: based on strong relationship

url优化分为显示url和访问url两部分优化

超级链接的基础语法是：（） A: <;a goto="URL">;<;/a>; B: <;a herf="URL">;<;/a>; C: <;a link="URL">;<;/a>; D: <;a href="URL">;<;/a>;

链接的基本语法是。(___) A: 〈a body="url"〉...〈/a〉 B: 〈a href="url"〉...〈/a〉 C: 〈a alink="url"〉...〈/a〉 D: 〈a goto="url"〉...〈/a〉