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【多选题】
TKIP 加密比 WEP 加密安全性高,是因为()。A.
加入了密钥分发机制，不再使用单一密钥
B.
采用了更复杂的加密算法
C.
采用了更强的数据校验算法
D.
采用了更长的 IV
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举一反三
【单选题】Some scientists think there might be more advanced civilizations on other planets because______.
A.
some planets support more advanced civilizations
B.
some civilizations have sent us signals we can't recognize
C.
the evolution of intelligence on other planets is unlike ours
D.
some planets in our galaxy are much older than the earth
【判断题】From the earliest documented accounts, ancient civilizations have explored the earth by sea.
A.
正确
B.
错误
【简答题】How do you understand the statement “The great Asian civilizations have added to the diversity of human civilizations ”?
【简答题】Modern civilizations are as dependent on trees as ______.
【单选题】不用注射HBIg被动免疫的人群是( )
A.
无症状HBsAg携带者
B.
皮肤破损处沾染了HBsAg阳性血清者
C.
输入过HBsAg阳性血液者
D.
HBsAg阳性母亲所生的新生儿
E.
接受过HBsAg阳性器官移植者
【单选题】The use of money is not limited to high civilizations; actually many primitive peoples have moneys of their own.
A.
discovered
B.
devised
C.
diverted
D.
diversified
【简答题】Civilizations have grown and prospered in Rome for thousands of years, which is why Rome is nicknamed _______________
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