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【简答题】
(课本习题3-22)假定在使用CSMA/CD协议的10Mbit/s以太网中某个站在发送数据时检测到碰撞,执行退避算法时选择了随机数r=100。这个站需要等待多长时间后再次发送?如果是100Mbit/s的以太网呢?(要写计算过程)
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举一反三
【单选题】The children are fond of ______ to the New Year party, and I don’t mind _____ there till midnight.
A.
inviting, keeping
B.
invite, their staying
C.
be invited, their stay
D.
being invited, their staying
【简答题】Most children are fond of cartoons like those Disney ones.
【单选题】What some Chinese parents understand is that nothing is fun _______ their children are fond of it.
A.
after
B.
when
C.
if
D.
unless
【单选题】The children are fond of ______ to the New Year party, and they don’t mind _____ there till midnight.
A.
inviting; keeping
B.
invite; keep
C.
be invited; stay
D.
being invited; being kept
【单选题】Young children are fond of __________ computer games.
A.
play
B.
to play
C.
paying
D.
played
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