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【多选题】
Which three security concerns can be addressed by a tunnel mode IPsec VPN secured by ESP?（） (Choose three.)A.
data integrity
B.
data confidentiality
C.
data authentication
D.
outer IP header confidentiality
E.
outer IP header authentication
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【简答题】先天愚型
【简答题】先天愚型最普遍的情形是 [填空(1)] 。A. 第二十一对染色体异常
【单选题】She explained why she couldn't leave for America, ___________ ?
A.
didn't she
B.
did she
C.
couldn't she
D.
could she
【单选题】The security judge was very _________ when she explained that the driving licence was necessary for her work .
A.
reasonable
B.
natural
C.
ridiculous
D.
available
【单选题】Is this the reason ________ she explained in the report for her success in the job? [ ]
A.
what
B.
that
C.
how
D.
why
【简答题】纸币是由国家发行并强制流通的( )，它代表贵金属货币执行流通手段职能。
【单选题】She explained it again to make herself _______ by the audiences.
A.
misunderstand
B.
misunderstood
C.
misunderstanding
D.
to misunderstand
【简答题】先天愚型最普遍的情形是（）。
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