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请用了不超过150字篇幅,概括出给家资料所反映的主要问题。

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案例分析题HTTP协议是常用的应用层协议,HTTP双方的一次会话与上次会话是(),从交换信息的整体性说是()的协议。 从交换信息的整体性说是()的协议。

A. 面向事务
B. 面向连接
C. 面向用户
D. 面向应用

案例分析题The major problem with E-mail is that it is (1) easy to use that people can become (2) with messages (3) they can possibly answer in a day. In addition, mail boxes require some management to (4) messages or archive those that might be required later. Senders don’t always know about your E-mail backlog and often send (5) messages. (2)处应选择()

A. full
B. lost
C. inundated
D. filled

未锻轧的非合金锡(符合HS注释规定)

根据规定,进口减免税货物和保税货物的收货人是海关监管手续费的纳费人,代理人不可以代缴纳。 ( )

A. 对
B. 错

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