题目内容

29、ARP的主要功能是()。

A. 将IP地址解析为物理地址
B. 将物理地址解析为IP地址
C. 将主机域名解析为IP地址
D. 将IP地址解析为主机域名

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30、TCP与UDP使用( )对通过网络的不同会话进行跟踪。

A. 端口号
B. IP地址
C. MAC地址
D. 序列号

After doing many tests on Estelle, the doctors discovered part of her legs had to be cut off.

A. 对
B. 错

When Estelle first got her prostheses, she could walk with them easily.

A. 对
B. 错

In the marathon for cancer, many people bet on Estelle and finally she won, so they got all the money.

A. 对
B. 错