【判断题】1949年,Diffie关于保密系统的通信理论的发表,奠定了密码学在公开领域研究的基础。( )
【单选题】1949年,()发表了题为《保密系统的通信理论》的文章,为密码技术的研究奠定了理论基础,由此密码学成了一门科学。
【简答题】What’s your opinion on economic globalization?write and essay at least 200 words
【单选题】曲墙式衬砌、复合式衬砌、偏压衬砌、圆形衬砌等五类。
【单选题】1949年,( )发表了《保密系统的通信理论》,开辟了用信息论来研究密码学的新思路,奠定了现代密码理论的基础。
【单选题】Why is the short story entitled The Discus Thrower?
A.
Because t he patient throws a plate every day.
B.
Because t he plate of srambled eggs is just like a discus .
C.
Because t he patient wants to become a discus thrower and he practises evry day .
D.
Because t he patient wants to prove that he is still alive and has vitality.
【判断题】A short essay in which someone speaking for a publication (such as a newspaper or magazine) expresses an opinion or takes a stand on an issue. This kind of essay is called editorial.
【单选题】1949年发表题为《保密系统的通信理论》的文章,为密码系统建立了理论基础,从此密码学成了一门科学,这位学者是()。