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【简答题】
OSI 安全体系结构中,五类安全服务是指 ___________ 、 ______________ 、 ___________ 、 ___________和 ___________ 。
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举一反三
【单选题】News report 2--- 1. What is the right account of “Perez y Martina”?
A.
It is a story about Spanish immigrants.
B.
It is a tale about a cockroach and a mouse.
C.
It is the name of a story-telling program.
D.
It is the name of a book.
【单选题】Why not ___ an English club to practice __ English? [ ]
A.
to join; to speak
B.
join; speaking
C.
join; to speak
D.
to join; speaking
【单选题】What is not right about Xinchejian?
A.
Xinchejian is the first hackerspace in China.
B.
It is only built in China.
C.
It is a non-profit organization run by volunteers.
D.
Xinchejian’s mission is to support and promote physical computing, open source hardware, and the Internet of Things.
【单选题】News report 2--- 1. What is the right account of “Perez y Martina”? [音频]
A.
It is a story about Spanish immigrants.
B.
It is a tale about a cockroach and a mouse.
C.
It is the name of a story-telling program.
D.
It is the name of a book.
【单选题】[音频] News report 2--- 1. What is the right account of “Perezy Martina”?
A.
It is a story about Spanish immigrants.
B.
It is a tale about a cockroach and a mouse.
C.
It is the name of a story-telling program.
D.
It is the name of a book.
【简答题】土的压缩指数Cc的表达式为( )。
【简答题】地形图上等高线通常分为( )。
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