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.在观察草履虫的实验中,用来观察的液滴应取自培养液的( ),因为(
人气:367 ℃ 时间:2020-03-25 04:43:03
解答
表层.因为表层含氧量高,食物丰富,因此草履虫较多.
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在观察草履虫实验中.要求同学从培养液的表层吸取一滴培养液进行观察.这是因为培养液的表层草履虫数量...
在观察草履虫实验中.要求同学从培养液的表层吸取一滴培养液进行观察.因为培养液的表层草履虫数量最多.
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