A . A、T0=(T11+T21+T31+T41+T51)B . B、T0=(T11+T21+T31+T41+T51)/5C . C、T0=(T12~T11)+(T22~T21)+(T32~T31)+(T42~T42)+(T52~T51)D . D、T0=(T12~T11)+(T22~T21)+(T32~T31)+(T42~T41)+(T52~T51)/5
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