A. <html>...</html>、<body>...</body> B. <body>...</body> C. <html>...</html> D. <head>...</head>、<body>...</body>
A. B2B B2C C. B2G D. C2C
A. http//www.zfc.edu.cn B. http://www.zfc.edu.cn C. http:\\www.zfc.edu.cn D. http://www.zfc.edu.com
A. 物流 B. 资金流 C. 商流 D. 信息流
A. B2C B2B C2G D. C2C