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【单选题】
以下关于多播概念的描述中,错误的是A.
IP多播是指多个接收者可以接收到从同一个或一组源节点发送的相同内容的分组
B.
发送主机使用多播地址发送分组时不需要了解接收者的位置信息与状态信息
C.
利用多播树可以将多播分组转发到整个互联网
D.
支持多播协议的路由器叫作多播路由器
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举一反三
【简答题】The teacher makes sure, too, that the children will get enough rest and play, ______ (在接受教育的同时).
【单选题】Formal education in modern societies ________.
A.
makes sure there are no illiterates
B.
comes into being relatively recently
C.
is enjoyed only by the noble people
D.
is free to everyone who is a citizen
【简答题】报表的标题一般放在____________节
【单选题】Bob, _____ sure to come to the meeting early tomorrow! [ ]
A.
is
B.
make
C.
be
D.
makes
【简答题】The chef uses only the freshest ingredients and makes sure the dishes are high in taste and low in fat.(翻译)
【单选题】English people are sure that the 2012 London Olympics _____ the city environment better. [ ]
A.
makes
B.
will make
C.
made
D.
has made
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