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【多选题】
显示器接口电路如图所示,片内RAM的8个单元40H~47H用作显示缓冲区,分别对应8个显示器LED0~LED7,要显示的数据事先存放在显示缓冲区中。从右至显示出对应缓冲区单元的数。七段码表如下表。 键号 0 1 2 3 4 5 6 7 段码 0C0 0F9 0A4 0B0 99 92 82 0F8 键号 8 9A.
B.
C.
D.
E.
F.
段码 80 90 88 83 0C6 0A1 86 8E
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举一反三
【单选题】One piece of work of _____ United Nations is to help _____ poor in _____ developing countries.
A.
/, the, /
B.
/, the, a
C.
the, the, the
D.
the, /, the
【单选题】Which one of the following characteristics is NOT a proper description of “A Piece of Yellow Soap.”
A.
It is a “slice-of-life” type of writing.
B.
The story is told superficially by a naïve narrator.
C.
It has distinctive features of a new writing style.
D.
It explores the depth of mind of the characters.
【简答题】通风的任务是什么
【多选题】有关DEM的说法中,争取的是____________.
A.
DEM是构成DTM的基础
B.
TIN可以生成DEM
C.
DTM的质量决定DEM的精确性
D.
Grid可以生成DEM
【单选题】is a one -way function that takes an arbitrarily long piece of plaintext and from it computes a fixed-length bit string. (72) is a protocol that most USENET machines now use it to allow news articles ...
A.
MD
B.
RSA
C.
DES
D.
MIB
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