【单选题】当一个发往目的主机的IP包经过多个路由器转发时.以下哪种情况正确地描述了包内IP 地址的变化?()。
A.
当IP包在每跳段中传输时,目的地址改为下个路由器的IP地址
B.
当一个路由器将IP包发送到广域网WAN时.目的IP地址经常变化
【单选题】What is the topic of this speech?
A.
Measures to strengthen the contact between parents and schools.
B.
Measures to improve children’s behavior in school.
C.
Measures to strengthen teachers’ authority.
D.
Measures to protect teachers from false allegations against them.
【单选题】What is the purpose of this speech?
A.
to tell others about a winning philosophy
B.
to explain why the speaker's team never loses
C.
to persuade the audience to give up coaching
【单选题】我国制定《食品安全法》的根本目的是保障公众身体健康和生命安全,这一宗旨的核心是()。
【单选题】在感性负载容量较大的情况下,为了充分利用电源设备的容量,需提高负载的()。
【简答题】What is the purpose of this speech?
【单选题】制定我国《食品安全法》的根本目的是保障公众身体健康和生命 安全,其前提是
【单选题】制定我国《食品安全法》的根本目的是保障公众的身体健康和生命安全,其前提是
【单选题】制定我国《食品安全法》的根本目的是保障公众身体健康和生命安全,其前提是
【简答题】What is the theme of this speech?