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【判断题】
设Z表示整数集, 在Z上定义 a○b=a+b+2ab, 则Z关于○作成群.A.
正确
B.
错误
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【单选题】The medical professor John Gregory (1724-1773) at the University of Edinburgh wrote the first modern, professional medical ethics in the English language, appearing as Lectures on the Duties and Quali...
A.
1762
B.
1772
C.
1782
D.
1792
【单选题】John Gregory (1724–1773), a ___________ physician and ethicist, professor of medicine at the University of Edinburgh, first physician to His Majesty the King in Scotland, is the author of the first mo...
A.
Irish
B.
Scottish
C.
England
D.
American
【简答题】17 24 再加上______个 1 24 ，就等于1．
【简答题】Easter night.
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