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【简答题】
设集合A只含一个元素a，则下列各式正确的是（ ） A．0∈A B．a?A C．a∈A D．a=A
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皮皮学刷刷变学霸
举一反三
【多选题】11合同一经成立,双方当事人就应当严格遵守合同的约定,依法履行合同规定 的义务。合同履行的原则包括( )
A.
平等原则
B.
自愿原则
C.
全面履行原则
D.
诚实信用原则
E.
公平原则
【单选题】do you of the sports shows? ——They’re interesting.
A.
How; think
B.
How; about
C.
What; like
D.
What; think
【多选题】What serious social problems have been spotted in the text?
A.
education
B.
social welfare
C.
housing problem for the young
D.
women's social status
【简答题】please list the writing guide of establishing business relationship letter
【简答题】（）对坚持和发展中国特色社会主义具有决定性意义，我们必须坚持以（）为中心，坚持以（）引领经济发展新常态，破解发展难题，厚植发展优势，不断为坚持和发展中国特色社会主义奠定强大物质基础。
【简答题】Please give an outline of the procedures of checking in for tour guide.
【单选题】What is false according to the passage?
A.
So far social problems have not drawn any attention of either educators or socialists.
B.
Teachers and parents have not taught children by personal examples-nowadays.
C.
Troubles with feelings are also a kind of social problems.
D.
Only those children with profuse knowledge intelligently and socially can deal with the changing world.
【简答题】Please describe the guide theory of optical fiber.
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