【单选题】把网页的CSS样式定义在一个扩展名为.css的外部文件,并使用@import在内嵌样式表引入到网页中,这种样式表成为()。 The CSS style of a web page is defined in an external file with the extension.css, and is introduced into the web page using the "@import"...
【简答题】In addition to the common elements shared by e-commerce,e-business also includes operations that are handled within the business itseff.For example,( ).