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不属于Z7的可逆元是（）。
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Z91中，34是可逆元。（）
下列账户类别中,一般情况下都会有期末余额的账户是() 。
借贷记账法的理论依据是()。
Cet-6-1.13-Exercise 01G) The second line of research often used to justify single-sex education falls squarely within my area of expertise: brain and cognitive development. It’s been more than a decade now since the “brain sex movement” began infiltrating our schools, and there are literally hundreds of schools caught up in the fad. Public schools in Wisconsin, Indiana, Florida and many other states now proudly declare on their websites that they separate boys and girls because “research solidly indicates that boys and girls learn differently,” due to “hard-wired” differences in their brains, eyes, ears, autonomic nervous systems, and more.
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