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【多选题】
蒙古象棋棋具多为牧民自制。制作棋子的材料有( )。棋盘大多是木料制作的。A.
塑料
B.
木头
C.
兽骨
D.
石头
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举一反三
【单选题】Body language can sometimes lead to_since people of different cultures often have different forms of behavior. for sending the same message or have different interpretations of the same signal
A.
misunderstanding
B.
communication
C.
agreement
D.
effectiveness
【单选题】设有一个关系模式 R ( U , F ),其中 U 为关系 R 的属性集合, F 为关系 R 上的函数依赖的集合。如果 {S1(U1 , F1) , S2(U2 , F2)} 是关系模式 R 的一个分解,该分解保持函数依赖特性的含义 是 。
A.
R = S1 ¥ S2
B.
U = U1 ∪ U2
C.
F = F1 ∪ F2
D.
F + = (F1 ∪ F2) +
【简答题】设集合 A ={ a , b , c } , R ={( a , a ), ( a , b ), ( b , a ), ( a , c ), ( c , a ), ( c , c )} , S ={ ( a , b ), ( b , b ), ( b , c ), ( c , a ), ( c , c )} 均为 A 上的二元关系。 求: ( 1 ) R○S - 1 的关系矩阵 M ( R○S -...
【单选题】What can we imply from the words of psychologist Philip Tetlock?
A.
People of different standpoint have disagreed opinions on the Berkley research.
B.
These experts of Berkley research are witnesses of redistribution of social wealth.
C.
The Berkley research elicits a fierce debate among the congressional committee.
D.
The committee chair who opposes redistribution will never call the experts.
【单选题】People's facial expressions may be misunderstood because ______.
A.
people of different ages may have different understanding
B.
people have different cultures
C.
people of different sex may understand a gesture in a different way
D.
people of different countries speak different languages
【单选题】At which place can people of different ages enjoy a good laugh? 查看材料
A.
The Cyclops Theatre
B.
Kaleidoscope
C.
Victoria Stage
D.
Pizza World
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