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【多选题】
设A是赋线性空间X的子集,则A是的充要条件是A.
A不是开集
B.
A的全体接触点构成的集合是
C.
D.
A是X的有限维子空间
E.
A中任意收敛序列的极限都在A中
F.
A中任意序列都在A中收敛
G.
A的所有接触点都在A中
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举一反三
【单选题】The idea of winning the eyes of the people around ____ powerfully to some youngsters, so they are eagerly identifying themselves.
A.
defies
B.
expels
C.
attracts
D.
appeals
【单选题】The idea of winning the eyes of the people around ____ powerfully to some youngsters, so they are eagerly identifying themselves.
A.
sticks
B.
holds
C.
attracts
D.
appeals
【简答题】在C#中,进行注释的方法有两种,使用//和“/* */”符号对,其中( )只能进行单行注释。
【单选题】When the idea of winning in sports is carried to excess, ______ competition can turn into disorder and violence.
A.
honestly
B.
honest
C.
honorable
D.
honorary
【简答题】I Translation Perception , hearing , Principle , Motion , Selectivity of perception , Perceptual Integration , Understanding of perception , Perceptual constancy ,
【简答题】A．At the airport. B．In an office. C．In a shop. D．In a car.
【单选题】Use guidelines to improve the accuracy of self-perception, perception of others, and perception of events.
A.
I can do it.
B.
I can not.
【简答题】I decided to c________ ( 做 ) a survey on students' perception of time management.
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