空气：风车（） A．海水：轮船 B．河水：发电机 C．煤炭：燃烧 D．油田：钻井 发布时间：2017-07-08 07:29 │ 来源：www.tikuol.com 题型：单项选择题 问题： 空气：风车（）A．海水：轮船B．河水：发电机C．煤炭：燃烧D．油田：钻井
题型：单项选择题 32．Communicating via E-mail is by far the most common Internet activity. You can (1) with anyone in the world who has an Internet address or E-mail (2) with a system connection to the Internet. All you need is (3) the Internet and an E-mail program Two of the most widely used E-mail programs are Microsoft’s (4) and Netscape’s Navigator. A typical E-mail message has three basic (5) ：header, message, and signature.(2)A．accountB．NC．userD．administrator 查看答案