(81-82题共用备选答案) A.>X+2S B.X+S C.X-S~X+

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问题 (81-82题共用备选答案)A.>X+2SB.X+SC.X-S~X+SD.<X-SE.<X-2S

选项 81.用离差法评价生长发育时,发育水平下等所指范围是

答案E

解析
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