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- 银行从业资格
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1.whereas weərˈæz]
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2.设R⊆X×X, (∀x)(∀y)(∀z)(x∈X∧y∈X∧z∈X∧∈R∧∈R→∈R),则称R在X上是传递的。
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3.设R⊆X×X, (∀x)(∀y)(∀z)(x∈X∧y∈X∧z∈X∧∈R∧∈R→∈R),则称R在X上是传递的。
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4.x)(Q(x,z)?(?x)(?y)R(x,y,z))中量词?x的辖域是( )A、(Q(x,z)?(?x)(?y)R(x,y,z))B、Q(x,z),R(x,y,z)C、Q(x,z)?(?
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5.P(x, f(A))∨Q(x)和 ¬Q(f(y))∨R(z)的消解式为A.P(x,f(A))∨R(z)B.P(x,f(A))∨Q(x)∨R(z), σ = {f(y)/x}C.P(f(y),f(A))∨
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6.已知关系R(X,Y,Z,P),有函数依赖集F={(X,Y)→Z,Y→Z},则R最高属于
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7.t yf (z)十4)r
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8.【单选题】P(x, f(A))∨Q(x)和 ¬Q(f(y))∨R(z)的消解式为A. P(x,f(A))∨R(z) B. P(x,f(A))∨Q(x)∨R(z), σ = {f(y)/x} C.
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9.9.数据逻辑关系:D(x,y,z)←-R(x,y Z)ANDS(x y,z) AND NOT T(x,y z)表达的是A、R-(S-TB、S—R—T
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10.We will use Python, R and ____ in this class.