若矩阵A满足A2=0,则必成立(  )

若矩阵A满足A2=0,则必成立(  )A.|A|≠0 B.A=0 C.A4=O D.A≠O

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Science to the human mind is__________(正如水或空气之于身体).

Science to the human mind is__________(正如水或空气之于身体).

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A person is lucky if his career __________ with his interest

A person is lucky if his career __________ with his interest and hobby.A.concer

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Cities make good homes for peregrine falcons because they pr

Cities make good homes for peregrine falcons because they provide__________A.bou

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