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行列式的行数和列数可以不相等。( )

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矩阵的行数和列数可以不相等。( )

矩阵是个数表。( )

Coding sequence of microRNAs may be present in the introns of split gene, and it can also exist in the intergenic non-coding regions.()

Small RNA molecules produced endogenously are called microRNAs, small RNAs that are transformed into cell exogenously are called siRNA.()