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【单选题】
You’d better _______smoking, ______you will get ill.
A.
go on; so
B.
give up; and
C.
give up; or
D.
give in; so
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举一反三
【单选题】当p为真、q为假时,下列命题公式为真的是:
A.
p∧q
B.
┐p∨q
C.
p→q
D.
p∧┐q
【判断题】使用图层蒙版不可以合成图像
A.
正确
B.
错误
【判断题】┐ (p q) ∧ q是命题公式。
A.
正确
B.
错误
【简答题】It seems to be strange to most of you that there is a blind spot on your eyes. Here is an interesting experiment that can make something disappear , when one eye is open. Make a card about the size of...
【单选题】职业实践包括哪几种:1尝试性实践 2模拟性实践 3职业性实践 4参观性实践
A.
①②③
B.
②③④
C.
①②④
D.
①③④
【单选题】下面哪个命题公式是重言式
A.
(P ® Q ) (Q ® P )
B.
(P Ù Q ) ® P
C.
(┐P∨Q)∧┐(┐P∧Q)
D.
(P ® Q ) ® P
【判断题】命题公式p∧┐(q→p)是永假式( )
A.
正确
B.
错误
【单选题】下面哪个命题公式是重言式
A.
(P → Q) ∧(Q → P)
B.
(P ∧Q) → P
C.
( ┐P∨Q)∧()P∧┐Q)
D.
┐(P∨Q)
【简答题】It seems to be strange to you there is a blind spot (盲点)on the eyes. Here is an interesting experiment (实验) that can make something disappear(消失) when one eye is open. Make a card which is as big as a...
【单选题】设命题公式为┐P→(Q∧R),则令该公式为真的P、Q和R的取值是:
A.
0 1 0
B.
0 0 1
C.
1 1 0
D.
0 0 0
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