POP3采用______模式，当客户机需要服务时，客户端软件(Outlook Express或FoxMail)与POP3服务器建立______连接。

A．Browser/Server

B．Client/Server

C．PeertoPeer

D．PeertoServer

Making cargo plan for appropritate distribution of the cargo on board is（）duty.

A.a ship's officer's

B.a tallyman's

C.a port planner's

D.a foreman's