B、Foxmail
C、Exchange
D、Sendmail
Questions 16 to 19 are based on the passage you have just heard.
A.To win over the majority of passengers from airlines in twenty years.
B.To reform. railroad management in western European countries.
C.To electrify the railway lines between major European cities.
D.To set up an express train network throughout Europe.
当客户机需要接收电子邮件时,客户端软件(如Outlook或Foxmail等)与POP3服务器之间建立的是()连接。
A.FTP
B.SMTP
C.UDP
D.TCP
A.STEP7Micro/WIN简单易学,操作方便,符合dos的标准操作
B.STEP7Micro/WIN是S7-200PLC的编程软件,操作方便,符合Windows标准操作
C.用于在线或者离线开发用户程序,并可以在线实时监控用户程序的执行状态
D.在编辑程序过程中进行语法检查